| | Re: which Photoshop program should I buy?
Go to adobe.com and download trial versions of both. They offer 30 day trials of most of their software I use cs5 and another program called serif photo studio plus x3 it's all the basics of PS for only 60.00. It's easier to learn as well. If your just wanting basic editing then serif is fabulous! Lightroom is good but is limited as far as creativity goes, in my opinion. I downloaded all the free trials before I bought one. It's a big investment for something you may end up not liking.
Hope that helps :0)