In this video you will learn and practise G major and E minor scales. I decided to  couple them since they are relative scales. Every major scale has a relative minor scale that is structured on the same notes. By practising both you will get used to playing them and using them for chords substitutions as well. I’ve included melodic minor and harmonic minor  since they are used in some songs as well. I’d suggest you practise these scales at least 5 minutes a day to master them.