[X] Go hunting; having the energy to actually use his powers is the best way to keep himself and his mother safe. Plus, if he wants to experiment with his powers later, he'll need the energy for that too.
[X] Deep dive Vampire lore. Knowing what he could possibly be capable of would be a great way to focus his efforts going forward, and may raise extra opportunities for deception as well
[X] Get on MetaHumans Online and start researching Gotham's cast of costumed crazies. Knowing who Julius needs to be careful of (and a bit about them) is the best way for him to stay safe.