Welcome :wave: and Congrats on you new little one! Here is a bit of forum good advice. NEVER listen to pet store advice. Most don't know the proper care of bearded dragons and will tell you incorrect info often putting your dragon at risk for health issues. Here is a link for a nutritious, color coded easy to follow list of vegetation for your Beardie. Most here recommend and follow it.
http://www.beautifuldragons.com/Nutrition.html Pet shops are notorious for giving incorrect, starvation diet info. They are known to advise to feed kale, carrots, lettuce and a few crickets a day. This is a starvation diet for your Beardie. Kale has oxalates which bind with calcium preventing absorption. Your little guy or gal can become calcium deficient by eating it leading to seizures and/or Metabolic Bone Disease. Kale along with others high in oxalates should be fed only occasionally. Carrots are high in vitamin A which your Beardie doesn't absorb well leading to vitamin A toxicity which can be deadly to your Beardie. Carrots. along with others high in vitamin A should be fed only occasionally. Lettuce has no nutritional value at all and isn't worth your Beardie chewing it up. Collard greens, mustard greens, dandelion greens, turnip greens and almost every kind of squash are best to use for a staple, daily diet. It is shown on the nutritional list.
Bearded dragons, babies thru sub-adult should be fed all the crickets or live feeders it can consume in a 15 minute period 2 to 3 times a day. This can be up to 25 to 30 crickets, depending on size, for each feeding. You have a growing dragon. It needs a lot of protein just as any other baby to teenager does. You will need a lot of feeders. Many buy on-line as it is less expensive to purchase 1,000 crickets a month in bulk while your dragon is growing out. The usual ratio is 80% feeders to 20% vegetation. As they grow into adults it becomes 80% vegetation to 20% feeders.
Your growing dragon needs calcium 5 days a week. Most use a 5:2 plan. 5 days a week, Monday thur Friday dust 1 live feeding a day with calcium. 2 days a week, Saturday and Sunday dust 1 live feeding per day with Vitamins. They can't process a lot of vitamins and don't need it more than twice a week.
It would be a good idea to get the Reptisun 10.0 tube UVB as soon as possible. You can get one on line at pet mountain for between $19 to $25, depending on length. You can get the T5 fixture for it at a Walmart for about $10. UVB is essential to your dragons health. UVB stimulates vitamin D3 to be naturally manufactured by your Beardie allowing calcium to be absorbed and utilized. Without it your Beardie will develop health issues like seizures and /or Metabolic Bone Disease. You can get by without one temporarily if it is warm and you are able to get your beardie out in the natural sun.
A minimum of 40 gallon reptile tank is recommended for an adult Beardie. A tank is not more desirable if it is taller. It can be harder to regulate the heat in a taller tank but that is up to you. I know it a lot of info, but usually if you know the reason to do something or follow recommendations it makes sense and comes easy. Many others will chime in. Not everyone will agree on everything but we all agree on the basics and want only the best for our Bearded Dragons. I hope this helps you in some way.
Amanda