diff --git a/README.md b/README.md
index 01f44ba..c02caae 100644
--- a/README.md
+++ b/README.md
@@ -1,31 +1,119 @@
 # vzborg utility
-Backup, restore and mantain your Proxmox vzdupms in 
-- Deduplicated
-- Local or remote
-- Optionally encrypted
+**Deduplicated, encrypted backups for the Proxmox Virtual Environment.**
 
-borg repositories
-## Requirements
-You need a proxmox 5.x or 6.x, and a suitable borg backup package installed.
+Vzborg uses vzdump and borg backup to allow deduplicated, compressed backups of Proxmox guests, in an optionally encrypted repository.
 
-If you are in proxmox 5.x you must enable stretch-backports repository and install it with:
+With vzborg, you can backup, restore, delete, list and mantain your backups in a flexible and efficient way.
 
-`apt install -t stretch-backports borgbackup`
+Use default retention settings to keep a suitable number of hourly, daily, weekly, monthly and yearly backups of your guest.
+
+Set up automated backups to remote repositories, simply setting appropriate ssh keys.
+
+## Requirements
+You need a proxmox 5.x or 6.x server with a suitable borg backup package installed. 
 
 If you are in proxmox 6.x you can just install it with:
 
 `apt install borgbackup`
 
+If you are in proxmox 5.x you must enable stretch-backports repository and install it with:
+
+`apt install -t stretch-backports borgbackup`
+
+If you want to use a remote repository, you need borg backup installed on it, with the same or a greater version, than the one installed in your proxmox server. If your remote repository is in another proxmox server, you can also install vzborg on it.
+
 ## Installation
-ToDo
-## Use
-`vzborg -c help`
+In your proxmox server run as root:
+
+`wget -O - https://raw.githubusercontent.com/g3492/vzborg/master/install_and_update_vzborg.sh | bash`
+
+## Usage:
+`vzborg [OPTIONS]`
+
+vzborg only uses options as parameters. Spcecified, but not used options, are ignored.
+
+### Required option:
+
+` -c COMMAND`
+
+Where COMMAND is one of:
+
+| Command   | Description                        |
+|:----------|:-----------------------------------|
+|  backup   |Perform a backup job.               |
+|  delete   |Delete a specific backup.           |
+|  discard  |Discard all backups of given guests.|
+|  getdump  |Recreate a dump file from a backup. |
+|  help     |Show vzborg help.                   |
+|  list     |List backups in repository.         |
+|  prune    |Prune (purge) repository.           | 
+|  restore  |Restore backup from repository.     |
+|  version  |Show vzborg, borg and pve version.  |
+            
+
+### Aditional options
+| Option          | Value      | Use                       |Description                        |
+|:----------------|:-----------|:--------------------------|:-----------------------------------|
+|-b (--backup)    |BACKUP_NAME |delete/restore             |Name of an existing backup (archive)|
+|-d (--dry-run)   |            |backup/prune               |  Perform simulation|         
+|-f (--force)     |            |restore                    |Force overwrite of existing VM/CT|
+|-h (--help)|     |            |all                        |Display command help. Requires -c option|                   
+|-i (--ids)       |VM_ID       |backup/discard             |PVE VM/CT ID or list of PVE VM/CT IDs  |
+|-k (--keep)      |RETENTION   |prune|List of retention settings |
+|-m (--mode)      |MODE        |backup                     | vzdump mode (default = snapshot)|
+|-r (--repository)|REPOSITORY  |backup/getdump/list/restore| Borg repository |
+|-s (--storage)   |STORAGE     |getdump/restore            | Proxmox storage (default = local)|
+
+### Configuration file:
+
+ `/etc/vzborg.conf`
+
+Edit before using vzborg, to customize defaults parameters.
+
+
+### Examples
+`vzborg -c restore -h`
+
+Show help about restore command.
+
+`vzborg -c backup -i '101 102 307'`
+
+Backup guests 101, 102 and 307 with default options.
+
+`vzborg -c restore -b vzborg-300-2020_03_20-13_11_46.vma -i 1300 -s local_lvm`
+
+Restore VM from backup with name vzborg-300-2020_03_20-13_11_46.vma as VM with ID 1300 to storage local_lvm.
+
+`vzborg -c list`
+
+List all backups in default repository.
+
+`vzborg -c list -i 303 -r ssh://example.com:22/mnt/remote_borg_repo`
+
+List all backups of guest with ID 303 existing on remote repository ssh://example.com:22/mnt/remote_borg_repo
+
+`vzborg -c list -i '1230 1040 2077' -r /mnt/vzborg`
+
+List all backups of guests with IDs 12030, 1040 and 2077 existing in local repository /mnt/vzborg
+
+
+`vzborg -c getdump -b vzborg-13998-2020_03_20-13_08_35.tar -s backups`
+
+Recreate from backup name vzborg-13998-2020_03_20-13_08_35.tar an lxc dump file in PVE storage backups (the file will be recreated as the compressed file vzdump-13998-2020_03_20-13_08_35.tar.lzo)
+
+`vzborg -c prune -i '101 102 307'`
+
+Prune or purge backups of guests with IDs 101, 102 and 307, on default repository, using default retentions.
+
+`vzborg -c prune -i '101 102 307' -k '--keep-weekly=4 --keep-monthly=6 --keep-yearly=2'`
+
+Prune or purge backups of guests with IDs 101, 102 and 307 on default repository, keeping 4 weekly, 6 montly an 2 yearly backups.
 
 ## License
 Licensed under GNU Affero General Public License, version 3.
 
 ## Feedback, bug-reports, requests, ...
-They are [welcome](https://github.com/g3492/vzborg/issues)!
+They are welcome [here](https://github.com/g3492/vzborg/issues)!
 
 ## Important note
-By now vzborg is alfa software. You can test it at your own risk
\ No newline at end of file
+vzborg is alfa software under development. Use it at your own risk
\ No newline at end of file
diff --git a/install_and_update_vzborg.sh b/install_and_update_vzborg.sh
new file mode 100755
index 0000000..e5fadca
--- /dev/null
+++ b/install_and_update_vzborg.sh
@@ -0,0 +1,69 @@
+#!/usr/bin/env bash
+# Install vzborg with:
+#
+# wget -O - https://raw.githubusercontent.com/g3492/vzborg/master/install_and_update_vzborg.sh | bash
+#
+# vim: set filetype=sh :
+# Make the script exit when a command fails (set -e).
+set -o errexit
+# Make the script exit when tries to use undeclared variables (set -u)
+set -o nounset
+# Exit on pipe fail
+set -o pipefail
+
+say() {
+    echo -e $1
+}
+die() {
+    say "Error: $1" >&2
+    exit 1
+}
+
+version_greater_equal() {
+    printf '%s\n%s\n' "$2" "$1" | sort -V -C
+}
+
+# CHECKS
+
+# Check if running as root.
+if [[ $EUID = 0 ]]; then
+   say "OK. Running as root."
+else
+    die "vzborg installation must be executed as root user."
+fi
+
+# Check PVE version
+if [[ -f /usr/bin/pveversion ]]; then
+    pve_version="$(pveversion | cut -d'/' -f2)"
+    say 'Checking PVE version'
+    if version_greater_equal "${pve_version}" 5.0; then
+        say "OK"
+    else
+        die "You need Proxmox virtual environment (PVE) version >= 5.0.0"
+    fi
+else
+    die "Can not find pveversion. Is this a Proxmox Virtual Environment (PVE) server?"
+fi
+# Check borg version
+if [[ -f /usr/bin/borg ]]; then
+    borg_version="$(borg -V | cut -d' ' -f2)"
+    say 'Checking Borg backup version'
+    if version_greater_equal "${borg_version}" 1.1.0; then
+        say "OK"
+    else
+        die "You need borg backup version >= 1.1.0"
+    fi
+else
+    die "Can not find borg. Is Borg backup installed?"
+fi
+
+# Install
+say "Installing vzborg to /usr/local/bin"
+wget -P /usr/local/bin https://raw.githubusercontent.com/g3492/vzborg/master/vzborg
+chmod +x /usr/local/bin/vzborg
+if [[ -f /etc/vzborg.conf ]]; then
+    say "Configuration file /etc/vzborg.conf exist."
+else
+    say "Creating default configuration file (/etc/vzborg.conf)"
+    wget -P /etc https://raw.githubusercontent.com/g3492/vzborg/master/vzborg.conf 
+fi
diff --git a/vzborg.conf b/vzborg.conf
index c989d0c..7745684 100644
--- a/vzborg.conf
+++ b/vzborg.conf
@@ -1,5 +1,6 @@
-#
-# VZBORG DEFAULT VARIABLES
+############################
+# VZBORG DEFAULT VARIABLES #
+############################
 
 # BORG REPOSITORY PATH
 #
@@ -22,16 +23,14 @@ VZBORG_REPO="/var/lib/vz/vzborg/"
 #
 # Select your borg encryption mode, for automatic repo creation on first backup
 #
-# Modes avilable for both proxmox 5.x with borg <1.1 and proxmox 6.x with borg >=1.1
-# are < none | repokey | keyfile >
-#
-# Aditional modes available for proxmox 6.x with borg >=1.1 and not backward compatible
-# are < authenticated | authenticated-blake2 | repokey-blake2 | keyfile-blake2 >
+# Choose one of:
+# < none|repokey|keyfile|authenticated|authenticated-blake2|repokey-blake2|keyfile-blake2 >
 #
 # For detailed information about encryption modes see borg documentation:
+#
 # https://borgbackup.readthedocs.io/en/stable/usage/init.html
 #
-ENCRYPTION_MODE=repokey
+ENCRYPTION_MODE=repokey-blake2
 
 # ENCRYPTION PASSPHRASE
 #
@@ -41,7 +40,7 @@ ENCRYPTION_MODE=repokey
 # automatically on first backup
 VZBORG_PASSPHRASE='MySecretBorgRepositoryPassphrase'
 
-# NOTIFICATION OF BACKUP AND PRUNE JOBS
+# NOTIFICATION OF BACKUP JOBS
 #
 # who recives the log info
 NOTIFY_TO="admin@example.com"
@@ -60,9 +59,6 @@ DEFAULT_KEEP='--keep-daily=2 --keep-weekly=4 --keep-monthly=12 --keep-yearly=2'
 # LIST FORMAT
 # 
 # Set a default list format 
-# Default list format for borg <1.1 (proxmox 5.x)
-#DEFAULT_LIST_FORMAT='{archive} host: {hostname}{NL}'
-# Default list format for borg >1.1 (proxmox 6.x)
 DEFAULT_LIST_FORMAT='{archive}  (host: {hostname})  {comment}{NL}'
 
 # COMPRESSION