1. Bet

2. Bet

3. Bet

1 and 3 are just plain easy value bets where you need to be building the pot for 3 streets of value in most situations. Sizing depends on your opponents etc but you want to be betting each for atleast 2/3rds pot.

2. Is also a lol easy bet because.

A: You start building the pot with a draw to the effective nuts and hence give yourself good implied odds vs the stronger hands in your opponents range and the potential to win a huge pot on later streets if you make your hand.
B: You pick up the pot very often and protect your hand from random cards that can make pairs but are folding their equity share to a bet.
C: You can fold out some better hands by the turn like PPs etc on good barrel cards (you can't do this by checking)
D: You can get called by worse draws which you crush
E: Yeah, you simply have a ton of equity vs most of your opponents likely continuing range, it's almost a value bet by the strickt definition of value bet (ahead of your opponents continuing range) and is defo a value bet when you consider reason A more closely.

No reason to check anywhere here, without very specific rare reads that it's best for some weird reason.

Tomorrow shall be your first day of true poker enlightenment!