Slide guitar is a particular method of playing the
guitar also known for its technique. The term slide refers to the movement of
the slide along the strings. As an alternative to altering the pitch of the
strings in the normal manner (by pressing the string against frets), an object
called a "slide" is placed upon the string to vary its vibrating
length, and pitch. This slide can then be moved along the string without
lifting, creating smooth transitions in pitch and allowing wide, expressive
Sometimes it takes a little guidance to open up the door to new vistas in guitar playing. A guitar teacher will allow you to develop a warm-up regime.
Most beginner guitarists don't know the importance of warming up which is not just essential for slide guitar but for any other kind of guitar, otherwise they reach a point in their lives that this starts to become more of a problem (thanks to back/neck/finger pains, RSI, etc.), and they eventually would be forced to stop playing.