For someone new to amphibian keeping, I can't say enough about the good ol' American toad (or related species). Easy to find, easy to keep, great eaters, thrives in a variety of conditions, and engaging personalities. Most specimens aren't brightly colored, which may account for the fact that most hobbyists don't keep them, but they more than make up for it with their charm. Although they are primarily nocturnal, they may be out and about throughout the day, unless you have them under a bright light.
Regarding handleability; if you want a pet that you can handle, amphibians are not a good choice. Most are small, fragile, and have delicate, sensitive skin. However, I would say that toads, owing to their thicker, drier skin, are more likely to tolerate gentle, occasional handling than almost any other amphibian. But it's really best if you don't handle them more than necessary.