When smart phones were invented, I would tell "older" people, as they were frustrated with them, as with anything tech-oriented, same with Picasa: "use it" "play with it", try it . A little each day. Become avid with "it", what ever it is. Picasa is so fun! It does all kinds of cool stuff! You can scan old picture from the 20's with defects in the picture. One of the programs can fix defects. I took a picture from a friend of mine of him kneeling behind a buck he shot. He had a cigarette in him mouth. I erased the cigarette from his mouth. Little by little you can manipulate the cursor to add or subtract color/colors. It is really fascinating!
Excellent storage too.