Previously, we learned about major and minor chords. Every major and minor chord has a scale of 8 notes, a major goes whole note then whole note then half note, then three whole notes and another half note. What you can do with that scale is pick three keys and figure out the chords of that scale. Certain notes on that scale are either major minor or diminished, and you may look up which notes are major and minor. The first, third, and fifth notes of a scale normally sound good, but if you want to stray from the beaten path you can experiment with the sixth or the fourth or whatever you want to do. You can also change the keys if you play a note in two different keys. The way to do that is to play a chord that is similar to that of another key  right next to the first key in the circle of fifths. The circle of fifths is a circle where every note that is the fifth is written after the original note in a circular pattern until it is a complete circle. You will know when you have drawn the circle of fifths correctly because it starts with c, which has zero sharps or flats, then it goes to g (the fifth of the c scale), which has 1 sharp in its scale. Then the circle goes to d (the fifth of g) which has 2 sharps in the scale. The pattern continues until eventually it goes full circle.

So the main lesson is, free style until you find a fun melody, then find the scale that melody is in, and make a nice left handed pattern to it so that you can show your friends and marvel at how cool you are.