Did I use pot odds well, or shouldnt I have called in the first place:

Poker Stars
No Limit Holdem Tournament
Blinds: t75/t150
6 players


Pre-flop: (6 players) Hero is Button with
UTG calls t150 (pot was t225), UTG+1 folds, CO calls t150 (pot was t375), Hero calls t150 (pot was t525), SB calls t75 (pot was t675), BB checks.

Flop: (t750, 5 players)
SB checks, BB checks, UTG checks, CO checks, Hero bets t150, 2 folds, UTG calls t150 (pot was t900), CO raises to t300, Hero calls t150 (pot was t1350), UTG calls t150 (pot was t1500).

Turn: (t1650, 3 players)
UTG checks, CO bets t450, Hero calls t450 (pot was t2100), UTG raises all-in t665, CO calls t215 (pot was t3215), Hero calls t215 (pot was t3430).

River: (t3645, 2 players + 1 all-in - Main pot: t3645)
CO checks, Hero bets t600, CO calls all-in t320.
Uncalled bets: t280 returned to Hero.

Results:
Final pot: t4285

Without even seeing the stack sizes - fold pre-flop. 64o is complete trash.

What were you trying to acheive with the min-bet on the flop? Bet at least 1/2 the pot there if you're going to bet. The min-bet doesn't really do anything.

On the turn... now any club or diamond out could be tainted! You have 4 definite clean outs, which is essentially like chasing a gutshot draw. I would have folded right there. You've only invested 300 so far, only have 4 definitely clean outs, and if you miss, you've put in a significant portion of your stack.

As played... river is fine of course.

I would strongly advise reading and re-reading the stickies here to start with. Also pick up some books like Harrington on Hold'Em volumes 1 and 2. If hands like these aren't unusual for you - you need to change how you play. This is some major leakage!