It depends on what you mean with ''this stuff'', i know a thing or two about making videos and uploading them on Youtube. If you mean about the expert wheel thingy, I'm still too green about it to be of much help.

If you want to start doing videos, you need some stuff to start off. First get a good mic, if you can afford a nice fancy USB one then go for it. Otherwise Rockband mics are damn good for their price, just bought one of the Swedish Ebay.

Then you need some software for recording and editing, i use X-split to record my stuff. You can use that or Fraps, but Fraps create really large raw video files so make sure to have lots of free space if you go with Fraps. I think Camtasia also has recording, but I'm not sure.

Depending upon the game, you might want to record voice audio separately, Audacity is a really nice program that is free to use. I use it for recording my FTL videos.

For Editing, you can use Sony Vegas Pro demo. That software is free and has no limitations on video length. I think you can also use Camtasia, might have a 30 day trial period.

The most important thing is to practise, both in how the software and the mic works and also how to record your videos. Your first videos will probably not turn out that well, but hey... its part of learning.

Hope that helps