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let them eat away

Yep, looks fine to me too!

Yup.. mine are just ripening here (kids are eating them)..mine are named variety and big with all this rain. No more rain!!!!

They multiply by the canes bending over and the tips rooting to the ground.

Yep, otherwise called black caps. Never hurts to wash them first.

wait until they are ripe and almost ready to fall off
black raspberries are my favorite for sure

Yep! Haven't even been out to check what's left of my wild patch - probably past since the red raspberries are starting to ripen. Enjoy!

yes you shouldn't have to pull on them. They should come right off when ripe. If your pulling them your not getting the sweet flavor. If you don't want them to multiply pinch the tips when they are about four foot tall. They will grow lateral branches that will give more berries next summer. I transplant mine to a row and run wire two foot and five foot. I let mine grow a little taller. The hard part is letting keep on the canes a day or two after they turn black. Everyone picks them as soon as they can, (kids).