>The incorrect way to use a microphone is to put it right in front of you like this (leaning in close) and speak into it because you pop your P’s real bad, and that could be dangerous on certain words.

Wouldn't a pop filter stop this?

That's what most vocalists use. They're like $20. I've got one for use with my compressor mic. It works great.

Also, i've been listening to a lot of tunes mastered for vinyl lately that doesn't use high compression(modern music). The same tracks on youtube sound noticeably worse not because of the file format but because of the automatic compression and gain youtube adds.

You have to take this into account when you upload a music track there.