Back yard gets really hot sun in the afternoon. Are there any particular types that will take well to that environment? I'm a bit overwhelmed at all the different seeds out there!

Don't plant Tomatoes in the same location each year, to avoid possible disease.
Till soil as deep as possible and ammend generously with well composted manure or compost.
Plant the roots as deeply as possible, removing some of the lower leaves on the plant, if necessary. Roots will later develop on the stem.
Add some lime to the soil when planting to help avoid Blossom End Rot(BER).

Sorry to say, I won't be growing Tomatoes this year.
I love the taste of freshly picked, red, ripe fruit, but have developed an allergy to them and can no longer tolerate any foods that contain tomatoes, raw or cooked.
Here's a link to a heirloom seed company that a number of friends buy from and recommend.
Good luck!
Rb