1. Jester is at the bandit camp. You may have to sneak around a bit to run into him.
2. To find the Temple you have to explore the swamp until you run into a statue puzzle that you can solve w/ your skills or being a thot.
3. I think the easiest way to earn likes w/ Bernard is to ask if he needs any help (I think you can get likes from the sickness event and bar meeting as well). After that you can get a heart from going to the hut (cottage), going to the hot springs, and I *think visiting him at night when he invites you.