If you want something to handle, you basically cut out most of the old world species - them the ones that tend to have nastier attitudes and more potent venom. Out of the new world stuff, I feel like the Brachypelma and Grammostola genera have the most to offer new tarantula keepers looking for a handleable pet. Here are some of the more commonly recommended.

B. smithi
B. vagans
B. emilia
G. rosea

Bear in mind that personalities vary and you can get a particularly nasty animal of any species. On average though, most of the above are pretty laid back critters. You might consider buying an older female(don't worry, the gals live decades) from someone who has already raised it up from a sling and therefore knows it's temperament. Slings can be a little delicate anyway so if you want to raise one up from a few instar(number of molts from egg), I recommend getting a little keeping experience first. I'd also steer clear of arboreal stuff for a first time tarantula. While they might not be prone to bite(Avicularia are pretty laid back and hugely popular), they can be jumpers and just a bit unwieldy for new keepers.