Hello everyone! What a great community.

I'm a half marathoner that may have to give up distance running due to some intestinal difficulties. The doc suggested I take up cycling instead, and I'm really interested. I'm 50 this year and aside from riding a mountain bike here and there, haven't ridden since I was a kid.

Any suggestions on bikes for the brand new kid? Do you buy the cheapest Giant and then upgrade later, or do you start off with something a little more techy? Since I have to buy everything, the cost is a bit scary.

I'm really interested in any newbie info, including how to learn to ride with clipless pedals and proper shifting. Do you join a group right away? Are there any old gals like me in North San Diego County? I need a buddy.