First off welcome to RO,
we are happy to have you on board. Secondly I should say that Pop Tart is adorable! I can see he/she in your avatar.
Thirdly, I'm still a newish bunny mom but I will offer my advice.
1. The very most important thing in a bunnies diet is hay. Hay is the number 1 staple in bunny diets. Hay is good for teeth health, ect. There should always be an unlimited amount of hay in a bunnies diet.
2. Bunnies need Water. You can provide Pop Tart water in a bowl or a water bottle. find when I give Ash water in a bowl he always tips it.
If you use a heavy ceramic bowl he wont be able to tip it. I use a water bottle for Ash. This is what it looks like.
You can find them online or most pet stores have them.
3. Bunnies should be supplied with unlimited pellets until they reach 7 months of age and then you cut down on them and supply a limited amount.
4. Bunnies should get lots of exercise. At least 3 hours per day of roaming the house.
5. Its always good to supply your bunny with toys. There are many homemade toys you can make, just search 'homemade bunny toys' and you should find some good ideas. Ash doesn't like many toys. He does 'play' with his cardboard box house. He'll sit in it and climb on top of it. I make him cardboard houses by simply using a simple box and cutting a hole in it for the door. If you make on for Pop Tart just make sure there is no tape or colored ink on the box.
6. If your bunny has a long coat you'll have to brush it often but it looks like Pop Tart has a more short coat like Ash. I don't brush Ash very much because it always stays in good condition, however when he sheds I brush him a lot to remove the hairs.
7. After time bunny nails need clipping, this can be tricky because they often squirm and kick. If it gets too hard to do it just take him/her to a vet, they will do the clipping for you, its a lot easier.
Yes pictures are always nice!
And good luck with Pop Tart!