Yes, Mint is good for beginners.
So is Ubuntu, which Mint is based on.
They are really the only 2 Linux distros that I would recommend to beginners.
The purpose of Linux Mint is to produce a modern, elegant and comfortable operating system which is both powerful and easy to use.
Some of the reasons for the success of Linux Mint are: It works out of the box, with full multimedia support and is extremely easy to use.
It's both free of cost and open source.
With centralized software updates, system snapshots, a unique Update Manager and the robustness of its Linux architecture, Linux Mint requires very little maintenance.
It works, it's safe and it doesn't break.