Widths of tires are in a range from 1 inch to 1 inch. Choose a wide tire for touring and a narrow tire for recreational and racing. To be able to shift your weight forward from the seat to the handlebars, you will want dropped handlebars, the ones that will turn down. These offer less resistance to the wind, for improved peddling. Recreational riding with a 10 speed requires a narrow seat, which works more comfortably with dropped handlebars.
Wide seats are more for upright riding.
Leather seats will eventually fit you, last longer, and are more comfortable than plastic. When you first begin riding, it is not recommended that you use toe clips. Go without them until you get familiar with mounting and dismounting. Start with miniclips, these will prevent your foot from sliding forward but do not have the bothersome straps. The use of the bike is important and will it fit you.