Photoshop Elements is excellent. I have also used Picasa (Free from Google) for editing and it's great for a free editor, but it doesn't have the same capacity to resize photos (I don't think). I use the PS Elements now because I'm doing a lot of web site work and needed a way to make the photos smaller in every way. It was worth the investment. You may also try some of the online photo bucket sites. They are now adding editors to their sites as an added bonus for storing your photos there. You can find those in some of the photo bucket type sites Like Photobucket, flickr etc. ...and now there are several free ONLINE photo editing sites as well. Examples http://www.picnik.com/ http://fotoflexer.com/ http://pixer.us/
There are dozens...just find the one you like that does what you want.
I just went to have a look to see if Picasa has done any updates. They have. They are now on version 3 beta and it looks really slick. Here is a video on YouTube that shows the new features. http://www.youtube.com/watch?v=rskC6c_5L1M Remember! This program is absolutely FREE and I really have enjoyed using it. (version 2) I think I might just download the new one and start storing some photos on the Google Picasa site. They make it too easy!!