Well let me tell you the main story is just the bone. The meat of the game is in exploration. Do every side quest you find. Wander the wastes and head towards any undiscovered marker on your compass. Save often because enemies scale up without warning. It can be annoying but spend time building your settlements. Once you get past the first bits of establishing it it starts to get fun. This is the first Fallout where you get this much of an active hand in shaping the world.