New 360 owner. How do I install games to the HD?

Hi. I just got my 360 today and have been having a blast with it. However, I have heard people recomend that you should install your games to the 360 hard drive for various reasons. Now, I've been looking over thew manual but I can't find anything that says how to do this. Can anyone tell me what needs to be done?

Once installed it no longer requires the disc inside of the 360, correct? In that case, how do I launch the game? Also, it reduces load times, correct?

Now, this is a bit off topic, but how can I remove the various game trails and videos that come already on the 360?

download latest dashboard. NXE. go to play game press Y and go to install on hardrive. takes 20-30 mins i think.

Once installed it no longer requires the disc inside of the 360, correct? In that case, how do I launch the game? Also, it reduces load times, correct?

Now, this is a bit off topic, but how can I remove the various game trails and videos that come already on the 360?

Also, about those trails: Is it a limited form of the game, like a demo, or one of those trail things where you can only play for about 30 minutes and then it's gone?

Also, about those trails: Is it a limited form of the game, like a demo, or one of those trail things where you can only play for about 30 minutes and then it's gone?

APic