Ok, the best advice so far was to check out beardeddragons.org.
You will need a cage for each of them ideally, as they are solitary, greedy and territorial animals and can damage and stress each other even when they're small. The ideal cage size is anything from 1.20 m length. The bigger the better
I'd recommend only newspaper or unprinted paper as substrate for small dragons, when they're bigger you can look at other stuff. They can get sick from ingesting any substrate while feeding and exploring. Sand is actually not a natural substrate for them as they live on firm surfaces such as mixed packed sand and clay soil.
Don't go for cheap UV tubes as mentioned. It's probably enough to get the UV 5 but if the minimal distance of the light fixture to the beardie is bigger than 30 cm, you can go for UV 10. If you're rich, you can combine a UV 5 with a UV 2 tube, that's ideal! You'll need fresh tubes after 6 months...
The hot spot for basking can be created with a normal light bulb. The ideal temp at the hot spot is about 42 deg. C, the coolest area in the tank at daytime should be around 24 deg. They need around 12 hours of daylight and heat.
I use a heat pad only in winter when night temps go beneath 20 deg. C.
You can furnish the tanks with sturdy rocks and wood but there are many other ways. Beardies also appreciate a hideout.
Baby beardies need to eat protein food three times daily, after a few month twice daily and so forth, until as adult a beardie that eats its greens willingly needs to be fed protein food only twice a week. Best food I'd recommend are, you guessed it, roaches

, dusted with a high quality calcium powder at least once a day for babies and twice weekly for adults.
The food items shouldn't be longer than the distance between a beardie's eyes, but I think that when feeding roaches, the food item can be a bit larger as roaches have softer legs. But to be sure, a baby beardie should rather be fed smaller than bigger items.
Protein food can consist of roaches, crickets, termites, silkworms and their moths, gaga grubs, superworms when the beardies are bigger, and wax worms and meal worms occasionally.
Greens should be offered daily, shredded into small pieces. A good list of suitable and less suitable options is this:
Beardie Greens List
Added to this list (note that salad doesn't feature high on it!) I also feed mulberry leaves regularly and grow the greens for mine in my own garden.
They benefit from bathing to prevent dehydration, as many beardies need to learn how to drink first. The water should be pretty warm, like for human babies, and should reach up to their shoulders only. Never leave a beardie unattended when bathing it to prevent accidental drowning! They also defaecate regularly into their bath water and need to be taken out immediately when this happens.
Many reptilians carry salmonella and other germs, so after contact with them and especially their faeces wash your hands well!
Beardies are by no means a cheap or low maintenance pet, but they deserve the best care, being as rewarding as they are