What is the difference between major and minor?
So we have, next to a root note and a fifth a major third, which makes a Major chord. If we have a minor third, the chord will be a minor.
On the guitar, a major chord can be easily transformed into a minor chord.
Example with chords with open strings:
The note in cyan is the third and is shifted by one fret.
Also Dominant 7 Chords have a third which can be shifted. This is how a B7 becomes a Bm7:
Same with Barre chord. To change the third, you can proceed as follows:
Usually when nothing is written, just for example ‘ D ‘ then that means’ D major ‘.. but stands’ Dm ‘ does it mean ‘ D minor ‘.
In easy words; minor is sad, major rather happy. Here is a small example for major and minor, play;
Doesn’t sound very logical and also not very nice: || D | C | Bb: ||
Now I just replace a single chord with a minor chord (D major exchanged with D minor): || Dm | C | Bb: || sounds a lot sadder.
The next possibility could be this example. Just add another bassnote on top of the chords: || Dm | C / F | Bb / D: ||
Or even always leave the same bass: || Dm / F | C / F | Bb / F: ||
You can find a PDF with the above examples here: