Honestly, I just got into biking. Was never really into sports before hand. Let me just give a lot of info about myself:
I'm a 20 year old male, 5'4, 138 lbs...No clue what type of riding I should aim for. Right now I eyeing two 70 mile charity rides in April, and I can currently do 20 miles at ~13 mph in about an hour and 40 minutes. I know it's slow but, once again, I just got into this sport.
This is my current bike:
http://cgi.ebay.com/NEW-ROAD-RACING-...item23039386f5
I understand it's a piece of crap, but I wanted at least something to get started on while I save money. I will probably just buy components, wheels, a new frame, etc to upgrade with rather than dropping a lot of money on a new bike. Eventually I'll basically have a new bike, and with all my spare parts, I could basically rebuild the one I am riding now.
Right now my bike weighs 29lbs, which is about 1/5 my total weight...my friend who has been riding for quite a while suggested I look into lighter wheels to reduce some weight, and he claims it will make riding at a higher pace much more manageable.
Given all that information, what should I be looking at, and what type of riding would be best suited for my physical form?