Congrats!
Since he is a baby I would recommend offering him crickets 2-3 times a day and letting him eat as much as he wants in 10-15 minutes. Make sure the cricks aren't any bigger than the space between his eyes to avoid impaction/digestion issues. You should also offer him a salad daily of collard greens, mustard greens, bok choi greens and/or other beardie friendly veggies. There is a good website on here that has a detailed list of what is okay and what is not. He might not be too interested in them when he is young but it's good to have out anyways so that they get used to it and have a nibble here and there. They will continually eat more greens as they get older but if you're lucky yours might eat a lot of them right off the bat.
When it comes to the calcium just read the instructions on the bottle because different brands have different dosages. You will also want to provide a multivitamin like herptivite once or twice a week as well.
Also, when feeding at night, make sure you do it at least 2 hours before lights out so he has time to digest in the heat.