Understanding spread betting can be a little tricky at first. The basic point is that one isn't betting upon so much the outcome of an event but upon the precision of your forecast of an event. To think in horse racing terms, we're not trying to bet on which horse wins the race: but by how many lengths the horse wins the race.
Now it's true we tend not to do spread betting on horses in that manner: but there's an entire world out there of events upon which we can. Sports events, where we've got points being socred, are an obvious place for us to be doing that. If a soccer match could be won 1-0, 2-0, 2-1 and so on, there are a number of possibilities to be more accurate than simply Team X to win. Given that there are more possible outcomes of course odds tend to be larger. Thus the excitement is greater. As are all the variations in what can be done.
But as with anything else new it's necessary to understand the basics and spread betting is no different. Fortunately there's anice site, which you can get to simply by clicking through any of the links, that can guide you through this process. Perhaps most importantly, guide you as to which companies are offering inducements to you to try out their systems and platforms on which to do such betting. Especially the free bets they offer.
Good luck and have fun!