Unfortunately I had a dad in the 70's that never let me touch his tools, so I guess I am using this site as a training ground for basic questions.

My brakes are mushy and I know there is air in there. I need to bleed them and wonder, is it as simple as removing the brake line running into wheel or do I have to get deeper into the brakes?

The manual talks about bleeding valves etc and I am a little (lots) lost