Join bearded dragons U.K. Facebook group for advise on the set up, bearded heed very specific temperatures and UV ranges. They can get metabolic bone disease if their set up for heat and up is incorrect, they need a cool zone, a mid zone and a hot zone with a basking area.
Don't introduce your cat and beardie, they do not ever need to be in the same space together. If our cats are in the garden and the door is closed we let our beardie free roam (max 20 mins at a time) and then put him back in his viv.
Do not handle beardie for two weeks when rehomed, they can suffer relocation stress. Some like being handled and some don't, ours won't walk onto your hand but when free roaming will climb up our leg and sit on our shoulders.
Only give live bugs, you can buy dried scorpions etc but this is not a full diet, it's an unnecessary treat. They can eat crickets, roaches, morio worms, calci worms etc all bought from pet shops. You can buy tongs and escape proof containers so you do not personally handle them- you will need to feed the live food also and give them water (gel is safer so they don't drown). Young ones under one need fed every day (very young a few times a day). Adults, about 8 bugs (more if Calci worms) twice a week. You need to use a supplement powder regime (3 types) to dust live food.
Beardies should have access to a water dish but seldom drink from them-they are desert creatures.
They do not eat cooked food so no leftovers. Fresh salad type veggies every day (again this is very specific because of calcium absorption and preventing MBD). Fruit is also unnecessary.
Exotic pets are less common and change more. Again, the FB group will advise on the ones near you if you join.
They will pop whenever and wherever they feel the urge to. The produce black poo as well as white urate from a vent. They can go weeks without pooing, they might poo twice a week. It stinks.
Baths are not really unnecessary, it doesn't help shedding and NEVER use any soap or oil.
Substrate for the viv is important, they like to dig but not deeply, incorrect substrate can be eaten and not digested and result in an emergency. If in doubt use beardie life or slate tiles (I use both).