Oktoberfest is a lager beer. Do you have a fermentation fridge with temperature controller or other means to keep the beer at ~55ish degrees, followed by extended lagering at <40 degrees?
If you don't, definitely look for an ale for your first beer. They are quicker and easier to make. It's even possible to brew an ale version of an Oktoberfest (sometimes these are called Mocktoberfest in our community) and taste reasonably close to the lagered version.