1. Looks good if you pushed.

2. I don't like raising the turn in this hand, just call the turn and hope you hit. You will get paid if you do, so the implied odds are there.

3. You absolutely must fold preflop here. Pay attention to stack sizes when you call raises with weak hands. You are also out of position, so I don't think you can even call this against a full stack.

4. Call and see the river.