i've noticed when starting in first gear i hear a bit of a metal on metal sound from 1K up to about 1700rpm...also sometimes when driving hard it will grind a bit(waay different from the first sound i described, definitley gears clashing

) hitting second gear...
if i take off really slowly and baby it i don't hear the noise at all
my car also shifts rougher until it gets warm, then it's pretty smooth, but i can still feel some resistance when shifting into first and second sometimes...3-5th are butter smooth...
any ideas what to look at first?
also when sitting in nuetral with the clutch out i hear a bit of a whirring noise...could that be my throwout bearing?
should i hear any noise from it at all?