Recommend me...

… some software for making videos. Free software. And I don’t intend to make anything overly complicated, just a bunch of stills with music playing over it, but I have to be able to save it in a format that can be uploaded to youtube.

If you just want stills with music, couldn’t you use powerpoint? There are quite a few options as for the file format you save into, I dont know what youtube allows.

If it’s really basic stuff you’re after windows movie maker will do the job. I created a movie consisting of a bunch of stills with a soundtrack in the space of about 15 minutes using it and it worked fine on youtube.

Yeah, sounds like Windows Movie Maker would be perfect for what you’re wanting to do. I use it all the time to upload music from games to Youtube.