Hi Steve,
In terms of learning to use Photoshop, the two that first come to mind are both from Scott Kelby (worlds #1 selling author across ALL technical disiplines) (plus a down-to-earth goofball which makes for far more relaxed (and less rigid) learning). The first is The 7-Point System and the 2nd is The Digital Photography Handbook for CS4 (also available in CS3 & CS2 editions). If you work through these two then you'll be WELL AND TRUELY on your way (in fact I'd go so far as to say if you master the content of these two books - which isn't hard - you'll be streats ahead of most in the PP department).
In terms of EF85/1.2L -v- EF70-200/2.8L - OMG - I don't know what to say! I'd probably need to put on some vulcan ears and try to think logically like Spock as for me it would be like selling one of my own children (actually, some days that might be a much easier decision, but I digress!). For me it would be a very tough choice - but then again, I guess, it may not have to be in that they are different lenses with different purposes. Do you shoot faster than 2.8 much? Would the ability to only shoot as fast as F2.8 be a problem? Do you need the versatility of other lengths much? Could you get by with or afforn the 70-200/F4L (with or without IS) (much much cheaper, and just as sharp) (in fact sharper than the F2.8L version accorning to many) (although you need to do your capture sharpening with ANY lens for best results).