I think between those 4, and I must include FastBikerBoy for his encyclopedic knowledge of Sonar, they have virtually everything covered, though there are many more equally worthy of inclusion in the list.
I remember coming on here in 2007 without knowing a thing about Midi/DAWS etc. I had done a bit of hard disc recording and 'real' mixing on a pair of small Soundcraft desks but nothing like this at all.
Well the support & encouragement I was given blew me away, which is one reason why I love to extend the courtesy shown to me onto other newbies, sort of like giving something back to the community, if you know what I mean.