Inactive Recognized Developer
Developer unlock (for sideloading) just requires the SDK. I'm not going to tell you the "full procedure" of installing the SDK and running the registration tool it contains; if you can't figure that out you proooobably shouldn't be messing with your phone in the first place.\
Sideloading high-privilege apps requires more complex unlocks, which require special MS accounts (OEMs have these) or require hacks. We have such hacks for some of the non-Lumia phones, such as Samsung's Ativ line, but not for the Lumias yet.