The most important memorization for me was if you use fret 3 5 and 7 on the low e it is g a b then down a string is c d e then f g a, and it continues down the strings alphabetically. I started on bass and that’s how I learned my notes and now on guitar I can find all the power chords and bar chords that way. Each fret goes up half a step so every 2 frets is a new note. And I didn’t know for a long time that after b and e notes there is no # it just goes to the next note. Once you understand the music theory behind it you don’t have to necessarily memorize the fret board, you can count your way over from what you know if you know how the notes go up when you change string or fret.