OK--proper husbandry is KEY in having a happy, healthy beardie...
lets start with
lighting
http://www.beardeddragon.org/forums/viewtopic.php?f=34&t=114817&e=0
Now on to
substrate (the floor of the vivarium):
Particle substrate (sand, bark, etc) is not recommended for 2 reasons
-- it harbors bacteria, and has an impaction risk. The recommended
alternatives are: Paper towels, repticarpet, shelf liner, or tile.
Many people like tile as its easy to clean (dishwasher/sink) and keeps
your BD's nails trimmed, I use paper towels (always replacing them due
to poopoo).
Lets talk about
feeders:
Live feeders should be no larger than the space between your BD's
eyes. Here's a generally accepted list of safe foods:
http://www.beautifuldragons.503xtreme.com/Nutrition.html
A few rules of thumb -- superworms should not be fed until your BD is
16 inches or longer. Stay away from mealworms as they're hard to
digest, and may cause impaction.
and here's a little something I came up with
crickets - pain in the xss (stink, quick escapers, but cheap)
mealworms - too much hard outer shell, not enough good meat
(hard for poopers to digest resulting in possible impaction)
roaches - darn nice feeder (expensive on the onset, but easy to
breed, relatively slow movers, good meat to shell ratio)
superworms - delicious for BD's over 16ish inches for digestive reasons
phoenixworms - no experience, but from word of mouth they're
healthy for BD's but quite expensive and small
butterworms - nice treat for BD's, very fatty kinda like a
candy bar for your pooper
waxworms - don't like them. my pooper had the runs for days
after i fed a few to her. and she wouldn't eat more than 3 or 4 so i
dont think she likes em anyway
Okay, that's some general info. There's a ton of other people who are
way more experienced than me, but I hope this helps.