I found a video on YouTube (HERE) which gave some good guidance then got started.
I'd bought a £3 iron from Argos so wasn't worried if that broke, heated it up just until it was hot enough to melt the wax without smoking and I dripped it onto the board - roughly 1 spot per square inch.
I then ran the iron over the board, "ironed" it until the wax was spread across the entire base evenly (ish) & left it for 20 minutes to dry.
Once dried properly I took the scraper and forming a 45 degree angle just scraped away until all of the wax had come off - it took quite a while and I have to say, made quite a mess!
Once it was all off I took a sponge with pan scraper bit and gave the board a rub down (front to back). The end result wasn't immaculate, there were still scratches in it etc. but I think thats the way it's meant to be. Less than 2 weeks & I'll be testing it on the side of a mountain! :-)

I soon got used to riding with 1 foot out and keeping my balance. The rest of the week was fairly uneventful in that respect apart from one day when we got on a chair lift, it swung backwards as we sat on it, then as it came forwards again the front of my board dug into the snow and it flipped me right off the chair! The crowd of people waiting for the life were highly amused! :)