One other thing that hasn't been mentioned...get a bike computer. Yes, you can track your rides on your phone, but I like having the bike computer mounted on my bike, and my phone in one of my jersey pockets. I have a Garmin that has a heart rate monitor sensor, cadence sensor (how fast you are pedaling) and a speed sensor (mounts to the rear wheel hub, is way more accurate than GPS). My three sensors are ANT+ connected to the bike computer. However, just starting out, you can get a cheap (~$20) wireless bike computer that just tracks mileage and time ridden, time of day, etc. There is a magnet that you mount on your front wheel, that hooks up with the computer t track your speed.