I moved from MS to Linux a couple of years ago on my own personal computer. I am not an expert but I still prefer use Mint every day.
Here is what a non expert like myself, would recommend to a new user:
1-At first do your experimentations on an older recycled PC, you will feel more relax and you will actually get decent use of that PC with Linux installed on it. Please use wired Internet at first, especially for the install!!!
2-Learn how to find and install software on Linux. Look at and try some of the free software that is made available by your LINUX distribution.
3-Try different distributions especially the one with live CD's. (PUPPY linux
, PCOS, Ubuntu, Try dragon fly BSD) you will eventually choose Mint but your experiments with the other distros will be great for building your confidence.
4-Whenever you have a problem search google stating your problem with UBUNTU at the end. The UBUNTU community has no rivals when it comes to giving clear "how to fix" instructions. The fix are applicable to Mint and many of the other distributions.
5-Find a friend to share your experiments with. Linux enthusiasts are everywhere there is IT support (at work for example). You will be surprise to find you'll make new very helpful friends in that department. (be nice to them, these guys can save you tons of time at work)
And yes you WILL have fun with it. Most of all you will feel these OS to be very responsive and you will rapidly forget what a virus is. Most of all you will forget the time wasted waiting for your anti virus to do it's things (what ever they are doing no one knows exactly). Also you will ask yourself why did I pay for all the inefficient software when good working software was available for free with your distro's Linux repos.
Please don't forget to help out those hard working on Mint if not with your time at least with a little money.