The ‘happiest’ sounding of the modes, the Ionian is identical to the major scale, so it’s highly likely you’re already ...

You don't need to know many guitar scales to play guitar solos ... You should be able to see that the C major pentatonic scale uses all the notes from a C chord, plus a couple of extras.

The guitar is a relatively new instrument, so it's good that some end up looking at it differently. Read about the first song ...

Major pentatonic scales are used a lot in folk music and Chinese music. They usually have a joyful feeling. They are also very good for solos and melodies played on the guitar.