I've had the most success with rockets where the payload is the center stack and the lifting vehicle is built out around it. Nuclear engines are ideal for once you are already in orbit. I would highly recommend installing MechJeb to take some of the guess work out of your rocket designs. It will tell you how much deltaV you have. DeltaV is change in velocity. I think you need around 3000 for a good higher orbit around Kerbal. Plenty of others already answered the camera view question. OH, and if you're having trouble where your rockets are shaking apart, use radial decouplers, small hard points, and struts to connect across stack decouplers. It should look like tension wires running down the side of your rocket but elevated. Helps me a lot.