So I learned this trick from youtube that you can read notes relatively.
I can see that the first 2 notes in this piece is a G4, instead of figuring out what the third note is, I just press the key a SECOND up from the second note, and for the fourth note, I just press the key a SECOND down from the third note, and for the fifth note, I just press the key a FOURTH up from the fourth note, so basically I press based on the relationship of the future note and my last note, I don't actually think about what specific note I'm pressing, I only think in relationships.
This trick is easy in key of C, where there are only white notes and skipping down and up relatively is easy.
But what if the key is C# major or Cb major with lots of accidentals?
Should I modify this trick with more sophistication, like more detailed mapping of major and minor seconds, fourths, and so on?
Or are there some other tricks for fast reading in ANY key?