To start learning Santana - Sideways chords, centre your learning around these elemetal chords sequence: Em, A, Am, Em, Cm, G, Am, A, E and Am. I suggest starting at a calm pace of 56 BPM, and as you gain confidence, approach the song's BPM of 113. Considering the song's key of E Minor, position your capo to suit your vocal and chord preferences.