You WILL need a heat mat/lamp (preferably lamp, it's more natural). Reptiles will not adapt to a warm house . My first reptile was a leopard gecko and he only died recently after 15 years, and I got him as an adult. So you really need to be thinking long term with many reptiles. They make great first lizards and don't need quite as much space as a bearded. But if you have the cash I would go for a pair/group of chuckwallas, they are the last reptile I kept and are much the same as bearded dragons but a bit more interesting. They are also 100% vegetarian so no crickets to worry about. Good luc