Until I have enough for a batch of wine I freeze the berries. Recently I have been freezing the blue berries until grape harvest to be able to add some red grapes to the mix for added color. Once the berries are all picked and ready to rock, I'll write about how to make the wine step by step.
Another option if you can't grow plants at home is to keep an eye out around parks and other wooded areas for berries growing wild. This was how I did it before I planted. Typically you'll find blackberries and black raspberries growing here and there. I could pick up up 15lbs of each no problem! Please stop back to see how these wines are made, it's simple and requires little equipment.
Now get out there!