I pretty much only bluff when I'm in late position and everyone else checks and my cards can represent a good hand, for example if the turn gives a card I could use in say a straight or flush. This doesn't happen often, but the times I've done it, it has gone well. Is this something it's smart to do? I usually raise with the pot or more doing this, depending on the table.

Something else that I've lost a lot of money on however, is when I believe someone else is bluffing and call their raise. Almost all the time they are not, is bluffing very rare? Should I just focus on odds and outs and just assume that pretty much everyone who makes a big raise has very good cards? How does experienced players handle this, cause people do bluff now and then, just not the times I think they are it seems