There is no rules how often you should peep into hive. It need not inspection.
Beekeeping skill is such that you learn to know how the colony developes during years course. Bee is wild animal and it live with its instincts. so you must learn its natural habit to live and then try to lead colony to your own aims.
So as a beginner you shoup peep into the hive, how build up goes
- enough room in spring
- swarming time
- flow time: enough free space, capped honey off, order of frames brood, empty frames, nectar cappe, more foundations
- before fall deminish room and extract honey.
- room for winter brood
if summer is good, i must extract several times from one hive. however 2 times is necessary allways.