Corndude - as I said, we use the first book shown, and I would recommend it. We have never used a UV bulb with any of our leopard geckos - including growing hatchlings to adults, and we have never had any MBD issues.
We do always have a dish of calcium in the cage through - the leos are seen licking it from time to time, and I do believe in supplementation.
We mostly feed mealworms, only occasional crickets and silkworms. One of the longest recorded living leos in captivity - 29 years, if I remember correctly, was fed on mealies for his whole life.
Skye