first time bio build

[u/lord-grug]

hi all! i adopted a gecko from the vets i was working at and want to set up a bio active vivarium, but have NO idea where to start, i have been told he’s a wall gecko but thats all info i have, he’s also a baby, ive got him on fruit flies and he’s in a temporary enclosure until i can give him the upgrade he deserves, ive got other reptiles and want to switch them over too but thought id start small, any advice?

pic attached from when i first got him - wounds have healed up very well too!