How many do you want? I teach this for a living.
I'd say that number one is to watch your levels. Digital recorders, including computers, must never be allowed to "peak"- go over their max signal level. The digital distortion cause sounds horrible.
If you have ordered an audio interface, you can use a standard Mic, you don't need a USB one as well.
I could go on about digital recording for two years- in fact I do, which is why they send me money every month.
You could try a visit to
Sound on Sound Magazine
which is edited by my friend Paul White, whom I heard playing in the Park today.
Cheers

Dave