Question 1 depends on the raspberries, wood that's fruited can be cut off, wood that hasn't fruited means you've got summer-fruiting raspberries adn that should be left. Autumn-fruiters fruit on same year wood ... incorrect pruning of summer fruiters is a big cause of failure in raspberries, but leaving old wood on autumn fruiters reduces the crop too... wierdly I've got summer fruiters that are making an extra flush right now....