How easy to change a switch?

[smart1]

I would like to change the traditional switches on my bedside lamps to the more modern 'rocker' style switch. Total novice - just wondered how easy it would be.

[smart1]

OK marden & bill - maybe I am selling myself short here. I have been changing plugs since I was 14, and have done a few minor (to my mind) electrical repairs in the home, and I have made cable exts which are easy. Not entirely a novice I suppose. Sorry if I misled, but I view myself as a novice.

[Canary42]

Make sure that the wire you "break" with the switch is the Live and not the Neutral. If the latter, operating the switch will still extinguish the lamp but the bulb socket will still be live and if the bulb is removed a potential disaster looms if someone touches the live pin.

[smart1]

Thank you Canary. V helpful.