Welcome! Getting a beardie is really exciting! They are truly wonderful creatures. Sorry for the following wall of text, but I wish someone had spelled all of this out for me when I first got Max - it would have saved me some trial and error. Be ready, however, because your new little guy will eat quite a bit of crickets (my 4.5 month old eats probably 75 small/medium crickets a day, and a similar number of large phoenix worms, depending on what I feed him on any given day). Just make sure you feed crickets and soft bodied worms, rather than meal worms, to avoid impaction. Also, nothing bigger than the space between his eyes.
I would warn you away from getting any kind of "bearded dragon kit." As I'm sure others on here will tell you (in fact, they are the only reason I didn't get a starter kit), the bulbs and some of the other contents are wrong. Before you spend money and waste your time/potentially endanger your new pet, you should spend some time reading through some of the info on this forum. The key components, however, are that you should have the following for the viv set up:
1) An adult bearded dragon needs at LEAST a 40 gallon tank. However, if you get a young one, he/she may be more comfortable in a 20L gallon tank.
2) Reptisun 10.0 TUBE
UVB light or Arcadia 12% tube
UVB light in the appropriate fixture (you can get an under cabinet fixture at Walmart for ~$10), which should shine directly on your beardie from within 6"-8". There should not be a screen between the light and your new baby. You can mount the fixture inside the tank with 3M command hooks.
3) You should have a basking light - you can use a regular incandescent household light bulb, as long as it has a clear bulb. The basking area should be between 105-115 F for a baby/juvenile beardie.
4) You should measure temps with a digital probe thermometer or infrared temp gun. The hot side should be about 90-95 F with a gradient down to 80-85 F on the cool side of the tank. The basking area, as I already mentioned, should be 105-115 F.
5) DO NOT use a night light - the temps can fall to ~68 F overnight. Beardies like to sleep in total darkness, so a night lamp will disturb their sleep. If your house gets too cold at night, you can get a ceramic heat emitter to keep his tank warmer (these do not create any light).
6) This is really important - do not use any kind of sand a substrate, especially with a young dragon. They tend to lick things, and sand can cause impaction. Instead, you can use non-adhesive shelf liner, paper towels, or slate tiles (my personal choice).
There's probably a few things I'm forgetting, but I mostly wanted to save you the pain and money of buying the wrong thing and being out more money than you hoped
Best of luck with your beardie, and I look forward to some pictures once you get him!