A pedalboard is no different to a keyboard, except the keys (Pedals) are longer, wider and larger spaced, so you can play them with your feet.
There are however 2 types of pedalboards, a full pedalboard where the pedals pivot from the rear, and a spinet pedalboard that pivots from the front, with a different technique required for each one.
My advice is to go for a spinet one unless you will be playing a lot of classical, church or theatre organ style.
With a spinet make sure you sit with your foot off the floor and can swing your leg over the pedals, ((If you need to lift your leg you are doing it wrong) and depressing the pedals with your toes, after that it is the same as learning the keyboard. (Just start off by playing the root note of the chord you are playing on the keyboard on the pedals)
It can be great fun, so have a think about it. (You also won't need to have your left hand bouncing all over the place unless you are playing piano)

Bill