Modern airliners have an auto throttle for takeoff, and the V speeds (which will be computed automatically based upon load and weather conditions) audibly tell you when to do important stuff. In simple terms to takeoff you just set the flaps and throttle, push a button, and pull up when told to do so. Once you are a few hundred feet in the air, the autopilot will take over and do the rest.

https://en.m.wikipedia.org/wiki/Takeoff/Go-around_switch

https://en.m.wikipedia.org/wiki/V_speeds