I read part of this, and part a couple of days ago...
Yes, manual focus does get easier. When I got my K-x I used auto focus a few times, wasn't very impressed, then got home and had all my older manual focus lenses, started shooting all manual. Getting accustomed to the viewfinder took a while, and it doesn't seem to be as good as my old 35mm ME Supers and K1000, but it works ok with a little practice. Now I shoot all manual.
As mentioned, shorter lenses like 50mm will be more difficult, but a combination of looking at the image in the viewfinder and paying attention to the focus confirmation beep gets me a lot of good shots. The main thing is practice. For a lot of casual photographers that might take a while, but since I generally shoot 50-150 shots every day it didn't take me long, and I was already accustomed to manual focus from 25-30 years of 35mm cameras, mostly Pentax and one Minolta. The lack of a split screen viewfinder didn't bother me much, it had started becooming difficult to use once I started wearing glasses, and I Had been shooting the Minolta a lot just before getting the K-x, and it has the same focusing method.
Practice with it, try working with longer lenses some, so you get a closer view, and you'll probably find it getting easier as you go. I find the focus confirmation is very accurate with my K-x, and that helps me a lot too.
Also try Irfan View for a small, basic editor. Not difficult to use, doesn't have the confusing array of options of more advanced editors, free, fast and works very well. I do almost all my editing with it. Once I get the basic editing done, which is usually just crop and maybe push the contrast, I just resize to 1024x768 and get a file size of around .5 MB or less usually. It also has a set of standard crop sizes that work for 1024x768 as well as print sizes for 8x10 or 4x6 prints. It was the very first thing I installed when I got my new laptop...it's also great for just viewing pictures, I love the full screen mode, slide show works great too. .
http://www.irfanview.com/