hello when learning scales which one should be first then 2nd etc... i know the minor pentatonic a little but want to learn more about scales and how they work.just dont know where to begin,or which scales to learn first.i play mostly classic rock and blues.also say with the pentatonic are there any lessons or exercises that help connect the shapes horizontialy across the neck or is this just a matter of mapping out say notes on 2 or 3 strings at a time and practicing or is there a better way? any reccomonded interactive courses or lessons. thanks