LEMP software stack is a group of open source software that is typically installed together to enable a server to host dynamic websites and web apps. This term is actually an acronym which represents the Linux operating system, with the ENginx web server (which replaces the Apache component of a LAMP stack). The site data is stored in a MySQL database (using MariaDB), and dynamic content is processed by PHP.
have compiled a list with the most useful websites about Linux (the distro specific sites are not included). They are great resources you can learn from or to find answer to your linux questions. These should be in any linux user bookmarks, so go ahead and look through these links and bookmark your favorite ones:
1)www.ibm.com/developerworks/linux Provides information on Linux, Linux resources, and Linux development.
2)www.howtogeek.com Includes help, tutorials, tips and how-to guides for Linux.