Wait! don't download a file to install - there's an easier way!

read the wiki on how to install apps - the last "how to" on this website's wiki - not maemo's wiki. Click wiki way up there on top of this page.

Also, you have to search these forums and there are great posts on how to convert videos or do anything else. Search for things like "media converter", convert video, install, formap, mp3, etc..
Look at this link:
http://www.internettablettalk.com/fo...ight=converter

Some avi files will run, and some you have to convert to the right size. Read maemoes wiki:
http://maemo.org/community/wiki/videoencoding/
There is a lot to learn, but it gets easier. there are no easy guides for a lot of the basics, but you can find it in Newbies forum.

Read the wiki first.
and this page:
http://maemo.org/community/wiki/howto/