My own Pixie was very easy. I bought him off Craigslist for 70$ at around 4.5 inches long. His previous owner kept in in the garage. I keep my frogs in my bedroom. One night I heard a low, rumbling croak, maybe a few weeks after the purchase. There are other indicators, but sexing a young froglet is difficult. An example of one indicator would be a mottled(spotted) underside, but this is a really inaccurate way to sex these frogs. I can't think of other ways off the top of my head, but they're probably mentioned inolder threads on here.
As for my African Bullfrog's setup, mine is fairly simple: A 90qt sterilite bin from target with about 2.5-3 inches of coco fiber substrate, a cheapo digital thermometer/Humidity Gauge and a reptile water dish. I use a side mounted heating pad at the moment, which i would NOT recommend, as it doesn't do much mounted on the side. Right now temp is kept warm via Summer heat. In the winter I will be adding a heat lamp, personally. I do plan to upgrade his setup eventually, but he seems quite happy for the time being.