Well Alex, you are 18 months old now and I am sure you will soon be learning to ride a bike. I have some words of wisdom for you: you will fall at least once, but do your best NOT to wipe out during morning rush hour. Drivers get annoyed at you if you lay on the road whimpering - I recommend you do as I did this morning: spring to your feet and pull your bike onto the sidewalk, and THEN realize how much the fall hurt. For drivers are in a hurry and think they are Important and will say Bad Words to you for slowing them down.
Make sure you have at least 1 friend whom you can call and wake up at 8:15am who will come and rescue you, but perhaps remind them that while you really appreciate them saving you and giving you bandages for you owies, beer will also make you feel better. I'm just saying.
Also, make sure your Mom is near enough to give you sympathy, and perhaps laugh at your stupidity for falling down - it's amazing the power moms have to make you feel better.