This video starts with a little guitar riff and goes on to show you how to practice scales. Scales are key to learning your fretboard and making it easy to sight read. As a preface the presenter talks about cage chord theory and which scales go with it. The second question is about moveable scales and how to make the best use of scales to improvise. First, make a five day scale practice plan. Then memorize the scale shape. After that, use a metronome to practice with. Then move between the scale shapes. You can start using scales against jam tracks. Finally, you can integrate pentatonics and arpeggios. The main thing is to get into a proper routine.