Some of the earliest effects available to guitarists were tremolo and vibrato. These effects were usually built into the amplifier. Between the vibrato, tremolo, and reverb there was little else available to the electric guitarist.
Leo Fender's company while prominent in the development of the electric guitar led to some great confusion with the mis-labeling of their amps tremolo channel as vibrato.
Seasoned guitarists have figured this out but for anyone who hasn't quite nailed down the difference here is a quick video to demonstrate to the difference between tremolo and vibrato.
Guitarists are a strange breed. Some of us only have one or two guitars. We find that special instrument and never look back. Some of us are obsessive collectors needing one of each kind in every color. Some of us are players and collectors who cherish both the special one that you always come back to but still have a few on the side for some variety.
While you can only play one at a time, each guitar does have a unique voice. Some are dark, some are bright, some just look cool, but all of them are part of the family.
Each one has a personality of it's own that requires special attention. Some are easy to play, some are challenging. Some are versatile, some are very specific, but all of these are mine and I am going to share with you my weapons of choice.
Here are the guitars I use in my various endeavors from recording to gigs to just sitting around the house noodling.