If you'll only ever watch a single video in your entire life (or are determined that all lectures are a terrible waste of time and money so I'll have to promise you sexual favours to watch one) make it this one. This is how it works. No ifs and no buts, just a big smile and how do I do this. Everything else if window dressing. And mostly the sort of butt-ugly window dressing you pick out yourself so that other people don't want to look at your window and you don't have to look out of it.
I swear, there's a really good metaphore in there somewhere.
Anyhow. Sit. Watch this. Smile.
Randy Pausch's wiki-entry.