When you want to enhance the sound of your guitar, you will need to add an effects pedal. There is a huge range of different effects available, such as distortions, chorus, flanging and much more. Effects are available in single form - sometimes called stomp boxes as they are foot operated - or as multi-effects which have a number of effects in one unit.
The most popular range of effects is the Boss compact pedal, but there are many more available from the likes of Ibanez, Line 6 or Digitech. Manufacturers such as Zoom have got the field of multi-effects down to a fine art and offer a multi-effect pedal for as little as £35.