It's been echoed throughout, but there's so much worth to learning to do some basic bike maintenance. The one thing I learned first is how to change a flat tire. Not only did it help me when I got a flat while out riding, it also meant I could get new tires and install them myself.

And, if I can send one more suggestion, start playing around with your tire pressure. It makes such a huge difference. Fast and comfortable is much more possible with the right tire pressure. The "Silca Pro Tire Pressure Calculator" is a great place to start!

And welcome to the commuting world! It's the best way to start and end the work day.