First bke I got to ride: my sister's hand-me-down 20" coaster brake step through frame
First bike to call my own: 24" Eaton "Glider" boys coaster brake
First 10-speed: 21" frame Royce Union (Shimano Lark derailleurs, Dia-Compe sidepull brakes, no aluminum alloy except brakes, levers & maybe hubs).
First real bike, 1976 Empire Professional, soon to be featured in overhaul thread.