modify readme for adding a new description. add external links file

Author: cesc1989

README.md

@@ -2,4 +2,9 @@
 
 The main purpose of this repo is to collect stuff related to backend. Be it conf. scripts, setup scripts, server dirty hacks, links, etc.
 
+### Dependencies Scripts
 
+The first one to be installed should be *lib_essentials.sh* as it installs basic stuff for other software to run on the server.
+
+1. dependencies/lib_essentials.sh
+2. dependencies/fix_locale.sh

external_links.md

@@ -0,0 +1,12 @@
+## Linux Commands
+
+- [Find Command](http://alvinalexander.com/unix/edu/examples/find.shtml)
+
+## Linux Monitoring
+
+- [Check Memory Usage](http://www.cyberciti.biz/faq/linux-check-memory-usage/)
+- [Kill Processes](http://www.cyberciti.biz/faq/kill-process-in-linux-or-terminate-a-process-in-unix-or-linux-systems/)
+
+## General Tutorials
+
+- [How to Use and Install Redis](https://www.digitalocean.com/community/tutorials/how-to-install-and-use-redis)