So far, there really hasn’t been much to memorise.
The two outside strings are both E, which makes them E-zy to remember.
That leaves only four open-string names to remember:
A, D, G, B
Now we can add one simple rule that is ALWAYS TRUE:
B and C are one fret apart.
E and F are one fret apart.
All the other natural note names are two frets apart.
For now, have a look at the map and notice how B and C always sit directly beside each other on the same string.
Next, we’ll come back to E and F and start using these simple rules to follow the note names up the fretboard.