Well, you get the airplane just about stalling, then kick in hard rudder and yank back!
The most interesting sensation comes in the transition from straight & level to the spin. It feels like you are falling but twisting at the same time. When we did it, it slowly started to roll and quickly started to pitch down.
Once the nose is pointed towards the earth, the roll rate starts to increase rapidly. The first time you see this, it's a little scarry but it strangely feels like you are in straight & level flight. I would say the transition from S&L was more unnerving then seeing the earth spinning in front of you.
Recovery (In a 152) happens almost instantly when the rudder is used, and you will find yourself in a steep dive. Your airspeed goes nuts and you have to be careful not to pitch up to quickly. I added power on recovery too early, and got the rpm's above redline for a second (oops). The biggest sensation you will feel is the G forces. This sensation also was more uncomfortable for me then the spin itself.
After you get into a sufficient climb and your airspeed starts to decay, you add power. That's it!
The best thing about doing spins is that I was verry afraid of stalls. As soon as I did the spin, I had the confidence of knowing I could get out of a stall, and a spin if need be. I'm a lot safer because of it!
Joe