Hey Damias, I got you message on FB but figured I would answer here also
Macro algae we have some restrictions on just based on our permitting for collection, but if you are anywhere near an ocean you can legally collect most types of algae for personal use.
Care instruction has been a tough one since most of these species have only been kept previously by public aquariums. Basic stuff like what each animal eats we are slowly trying to incorporate to the discriptions once we've seen it eat certain foods in captivity. 99% of the west coast pacific species we collect and keep will eat meaty foods appropriately sized to them.
You should totally join the coldwater owners facebook group if you haven't already www.facebook.com/groups/coldwaterowners