Former racer here...you would think that I would obsess over speed and cadence. I probably would if I had a computer on my bike. My solution is to have no computer. I just ride.

LSD--not that kind! Long Slow Distance is key to building endurance. The first year go for LSD and next year you can build on the base for speed.

The hills will come with time, but proper form and technique will also help. One of these days we'll go for a ride and I can help you with that. Although at 13 MPH, you're not too shabby, and I hope I can keep up!