I've just downloaded a few different Photo editing software programmes. I got myself very frustrated and totally flummoxed by most of them, the ones I did understand at a glance, provided nowhere near enough tools or options.
I've only had a few minutes play around with Photopad and I really like it, it seems simple and I like the whole look of it. I'm looking forward to doing more with it.
In my limited experience it is sometimes impossible to enlarge a fairly small original without losing a lot of clarity. It tends to blur or pixellate.