A couple of things....first some do's
Do....get their new tank set up according to good guide lines from either a long time breeder website or a long trusted website like this one.
Do....give beardie a few days to settle in before much handling.
Don't.....let young children + other pets near, they can frighten and/or hurt the beardie. Don't leave young children unsupervised.
Don't ...put it on your shoulder + walk around even if it seems very calm. They can often jump suddenly and become severely injured or paralyzed.
Don't....
bathe it in your kitchen sink. Although many owners seem to think it's fine to let beardie use the kitchen sink as a toilet, it is beyond unsanitary and if you just splash that water somewhere near where you prepare food it can make people very sick. And why use the kitchen when it is just natural to get a plastic tub just for your beardie and use it in the bathroom ?
I'm sure you'll get more advice coming soon.