I'm in transit a lot of the day. I have a bunch of videos on VEX but I was wondering if I could do more. It's probably a long shot since to practice VEX, it's best to have Houdini actually open. Alas, my trips are primarily on a busy bus and not the train.

It's kind of a longshot but I was just wondering if there were by chance any apps or resources other than videos I could make use of (offline capabilities would be a plus). Basically ways to practice when you're away from the actual software but do have some sort of tech with you (android phone or tablet).
http://techgeniuszone.com/ [techgeniuszone.com] http://movieseriesworld.com/ [movieseriesworld.com]
I know python is similar and I've been learning that along the way. I figured I'd ask about VEX anyways though.

There's a lot of stuff you can read on this site:

http://www.tokeru.com/cgwiki/?title=HoudiniVex [www.tokeru.com]