The effect in the intro. Is it a tape stop? What do i need to achieve this? Preferably a free VST

Detuned squares maybe?

Is the Goldbaby Tape 909 sample pack any good?

I don't think there's any reverb, at least on the first track. It sounds like a dry 909 kick. There's plenty of atmospheric sounds going on in the background though. Check out this thread: http://www.mnml.nl/phpBB2/viewtopic.php?t=52477

hydrogen wrote:LIMITAH!

That is actually my dubstep name

you are right about the sampling part, it's a key part in making house music. if your looking for records to sample i'd avoid stuff MCDE has recently done. if your going to share this info on a site, maybe you should ask him yourself. some producers don't like everyone knowing what they have sample...

33hz is a trick to make your woman come. Everybody knows that bro

You're right about the notes placement.