Glad you asking this as id like to know too..
What ive heard is:
-Don't let it dry out- or treat it like soil as it will cause salt build up and show symptoms like nute- lockout and def. problems ( it's basically hydro- the coco is just a support agent for the roots and have great air retaining properties thats why it doesnt need to dry out as the roots have enough air)
-Keep it moist (slightly wet)
-daily watering with nutes is good when the plants is big enough, otherwise every 2nd day depending ofcourse how enthusiastically you watered...in seedling stage if you planted in a big container water only around the seedling and not the whole surface of the medium, as it gets bigger make your watering circle bigger respectively.
-dont let it sit in runoff for more than an hour or so at most (im referring to runoff in trays or saucers.) But the basics stay the same.
-water until runoff of about 10-20% with each watering.
If i can think of something else I will add to this list but thats all ive got right now, its also my first time growing in coco so wait atleast for someone with experience in coco to relpy to this thread as I might be talking through my ass given my experience with coco..