Welcome to LQ!
There isn't really a system for beginers, but there are many distributions that are aimed to less skilled computer users.
Some recommended ones: Debian, Fedora, Mint, Ubuntu, Suse, they are very intuitive to use and install.
It is recommended to read as much info as you can about GNU/Linux operating system, if you are used to Windows keep in mind that GNU/Linux is not Windows
Learn the command line which is one of the most important tool. Here some links that will help.