Ever since guitar effects pedals first became a thing, guitar as an instrument changed completely. No longer were you limited to just one type of sound. On the contrary, with effects pedals, 

I wanna talk a bit about voodoo child... yea, like the hundredth time! But this time I am not talking about Jimi Hendrix’s voodoo child but its cover by the legend Stevie Ray Vaughan; a genius musician, singer, songwriter, and record producer. In spite of a short-lived mainstream career spanning seven years, he is widely considered one of the most influential electric guitarists in the history of music, and one of the most important figures in the revival of blues in the 1980s.

Processors come packed with loads of sound patches and effects which may actually confuse you for a while, but it will teach you everything related to effects overtime; from how to tweak them to how to control them, I mean everything.