Help a newbie with raspberry bush question please

Hello!
I have some raspberry bushes but I don’t know if they are summer or autumn fruiting and I don’t know how to prune them. The long stems all look like they have old fruit stalks on them. But the stems are also starting to create new buds. I have uploaded a photo. Should I leave them as they are or cut them right down to the ground? I see some suggestions saying to leave them a foot long so I’m very confused.

Many thanks,