Cool and Leopard Geckos are awesome lizards to start with.
I just love my little girl.
I hope I can help you out with some of the answers to your questions.....
1. A good tank to have is min 10 gallons, but it is nice to have bigger. I have mine in a 15 gallon long. 20 gallon is ideal. The longer the tank the better, cause since they are a dessert lizard, they don't need the height to climb
2. Bedding. There is such a debate. For little ones, ie juvis and babies, paper towel is the best substrate. If you want to use sand, use the finest grade there is, like play sand (which is the most unexpensive also). Other options are tiles (slate for more realistic) or just keep them on the paper towel. The reason behind some people don't like the sand is the chance of impaction. I use sand cause her food is always in a meal worm bowl and I look and check her poop and pee every day to see the signs and syptoms of impactions
3. Heating and Uv lights are recommeded. I also use and under the tank heating pad for night use, but it stays on all day. You will need heating lamps and I recommend an Uv light (but others may disagree). The temp should stay about 88 during the day and a bit cooler at night.
4. They do eat crickets and mealworm, yes. Mine (at most others too) love wax worms, but use those only as a treat once a week, or to fatten up a female to breed. They are extremly fattening and addicting to them (why
, don't know) so these are too be only used as I said before. If you are planning on breeding a good way to get your female ready is to feed her a pinkie, but that is only used in breeding.
You might also need a moist hide for the little guy/gal. Geckos, as like most other reptiles, they shed. But leopard geckos eat their shedding, and might more than likely do it at night. A good indication that they are going to shed, is that they seem to go a pastey white, and in the morning when you see them, they are a bright new looking lizard. Anyways, back to my moist hide comment, you will need one to aid in shedding. I use an old margine container with a hole cut out of it. Inside is moist paper towel (you can also use frog moss) but you must mist it and keep it moist everyday.
hmmmm, what else can I tell you....
I can't think of anything at the moment, but if you have any questions, feel free to PM me