This is really my first tropical pet and I'm not very sure how to take proper care for it. Last time we got hermit crabs from the beach, on the way home they died mysteriously. So, I'm guessing those were marine hermit crabs? I'm pretty sure this one is a land hermit.
Knowing this, what kind of setup do I need for a cage? I was just planning on buying a 10 gallon tank and maybe filling it partially with sand and some toys/shells. I heard about having humidity gauges and thermometers and I didn't see the need. I live in East Texas, and it gets very humid here, not to mention it hardly ever gets cold, if not cool.

Do I absolutely need a gauge for all this stuff? I'm not trying to be cheap, but I have no clue on where to get a humidity gauge and stuff. We live 30 miles from a decent pet store. We have a Wal-Mart, that's about it.
Also, my hermit is very scared it seems. Probably for good reasons, but still, I haven't seen him once come out to eat his food or drink water. This has been going on for at least 20 hours or so. What do I use to feed him from? I'm using the bottle powder food I got from the store in a small shell. There is a little bit of tap water in the bottom of the plastic container for his water source.
Do they drink tap water? Will he starve himself before he comes out to eat? I know he's alive because I tried letting him stay in my palm for a while, he eventually came out and when I went to peek to look at him, he jumped back in shell like I was a hungry seagull! I think he scared me more than I scared him however.
Sorry for the long post, but I would hate for him to meet the same fate of his other crab friends a few years back.

*goes to wal-mart*