You're right Mike on the 3 year old roots, I pulled my tags and checked they were 2, don't know where I got they were 3. Oh well! anyway I knew the rest but some may not know. We like using pine needles or straw for mulching them, we also add a good amount of compost for the roots, they need to get established the first year and around here that seems to helps. Red hard clay and bedrock are the pits to grow anything in.
I've never grown raspberries before, so what I said up above is what I got off the internet. Now blackberries and gooseberries are abundant around here, so I do know how to do those. lol