I'm starting with Mint at the moment. I have another called "Elementary OS" as well that I'm willing to try. Ubuntu sounds compatible with a bunch of things as well.

There are a few Windows programs that I can't part with so I need a viable VM solution for that which is my next challenge.

Also just installing things. I'm used to graphical interfaces so I've got to get used to terminal which is fine by me.

It's all just so exciting and to have my computer running like new is amazing without all of the bloatware on it.