I had a second degree tear.
Mine healed weird, so we've been having more problems than you probably will. But what I can say for certain is:
eat loooots of fiber! Pooping is going to suck for the next few weeks unless your poo is nice and soft.
Wait til your doc gives the okay, and then use
lots and lots of lube, and take it super slow.
Make sure your man understands that you might not want to finish once you get started. But you will need to keep trying, because it does get easier the more you do it.
I hope that helps. If you have any questions let me know!