You want to feed them small prey, the width between the gecko's eyes is good. Live food is best, and 'gut loading' is key to a healthy gecko.. Basically before you give the mealworms to the gecko let the mealworms munch on some vegetables.. What goes into the food goes into your gecko!
When you start out with the new baby, he will be shy, give him a week where you don't handle.. You can spot clean the cage to get him used to your hands being there, but try as little interaction as possible, let him get used to his new digs! After that you can begin to slowly get him accustomed to handling on 'his' terms, eventually he will let you hold him and will calm down!
When he begins to shed, turn one of the hides into a 'humid hide' where you put moist paper towels in to raise the humidity. Keep an eye out for stuck sheds on toes! If they won't come off after a while, give him a warm soak, not to where he has to swim, but to where it is to his shoulder about.. Warm not hot water, like 80s.
They get hyper when they are in feeding mode, so be careful about hand feeding, they might bite ya! Doesn't really hurt but you don't want to encourage that behavior! Funny thing is they will chase laser lights sometimes hehe. We found that out on accident.
Mm.. Feed every other day. Babies should eat as much as they want, juvies and adults should eat as much as they want for like 5-10 minutes, don't let them keep eating after that! They are chubby but we don't want them too fat!
The biggest thing is the correct temperatures! If you get them warm enough they can be forgiving with other care, if not, it just causes all other problems. If they are too cold they cannot digest their food, leading to impactions which can kill them! So keep them warm! :)
Keep an eye out on their sheds(they will eat these by the way), you can see if humidity is a problem by how long it takes them to shed and if they seem to struggle with it.. Keep an eye out on their poop, you can tell if they are sick by any changes in it or change in frequency, etc.
this caresheet is another good one, and I actually generally agree with the views on this reptile forum anyway, they can be harsh, but it's because they want the best for the animals. But I agree with this care sheet! :)