Very nice read and im glad that you seen the light and are back to the Pc.
Pc gaming are changing a bit but it's getting bigger by the day and easier to get into then before so rest assured you did the right thing
And the best thing you can do if you have a hard time getting into the mouse/key thing is to look for a nice gaming keybord. maybe this as I have and love the Merc Stealth. my mate plays like crap with a regular keyboard but since he tested this he just loves the keyboard thing
This is much more comfortable then a regular keyboard trust me!
BTW, I hope that the problem with your son worked out and everything is okey with him!