Yes they are easy to look after, and although can be left alone, they can become very tame. Not that I like their eating habits as they need live food, ie: insects, crickets etc (even spiders), 3 or 4 times a day. You should not pick them up by their tail as it can fall off!!
Make sure you buy from a reputable breeder, and it should have a fat tail which is almost as thick as its neck. It should be alert when awake and watch it eat, make sure it is eager. Dont buy a gecko that does not open its eyes when you touch ot or has old skin stuck to its feet.
My son is into reptiles and has bearded dragon and a corn snake, he finds them fascinating.