Hi there. I've just started biking, and already have a few questions--mostly regarding the basics of riding and training.
My SO bought me a Jamis Citizen 7005, and we've been biking for the last 3 weeks, increasing our mileage weekly. This last Sunday we completed 50 miles, which I felt pretty good about. Thing is...I'm fine for the first 3 hours and then my butt begins to get sore. I'm not sure if this is due to the seat, the shorts, or just a normal part of getting into condition. My SO said that I may want to look into getting another type of bike--that the one he bought me really isn't made for covering the road distance that we're covering. Any insight/advice?
Secondly. the handlebars are staight and I can do little to adjust myself, so I end up being in one position for the whole ride. Any suggestions?
I'm wearing gloves, but my hands still get a bit numb, and I'm not sure if anyone can address this issue as well.
Are there books that would be helpful re: all of these begginer questions and concerns?
I saw in another thread someone talking about "mashing pedals." What does that mean?
And how do all of you carry fluids so that they stay cold? Do you have thermal packs on your bikes--or backpacks?

Any input and advice is greatly appreciated!
Thanks!