So after 20+ years of riding mountain bikes I decided to throw in the towel. My current health issues make it so I just can't do the high energy off road rides anymore. So I bought a used 2013 Giant Avail. Tried it out last night. The fit is great. My questions are simple. Any advice for newbies just starting out? My only issue so far is the drop bars. I'm tempted to throw a flat bar on the bike and swap out shifters and brake levers. TIA!