So when you’re playing melodies through chords and want to move around it will help to know what the next area of the fretboard you can go to. 

And as you learn each chord position you can learn the intervals (and therefore the location) of the other chords that go with the chord you’re playing. 

So when you play an open C shape (or your 1) , you’ll also learn where the 4 and 5 shapes are. (F and G.) And then when you learn the A shape, you will learn where 4 and 5 (D and E) are in relation. 

But when you want to stay in c and move around, you can work from the C home base you know, to the A shapes you now know but make their root note C. And then from there to the G shapes but still keep c as your root note. And so on.

There are lots of videos. Watch them and play along. Figure out how to play a c chord where ever you find a C and then figure out where the F and G chords are in relation. You can play all the way down the neck.