A.T.
Hi Shandell!
Great idea to bike around! I've a friend who uses a seat on back of the bike, I use a trailer. Main difference is that she uses her bike mostly for short commutes, while I cycle long distance (clipless pedals, road-bike, etc.). Since I might fall over--I did the other day in fact--I prefer the trailer because it does NOT fall over with the bike. Consider what exactly you plan to do with the bike, go for something appropriate for use.
Oh, when you go shopping, Golden Bear Bikes (Broomfield) has a great selection for all kinds of bike gear.
Good job mommin!
A.