One of the perverse facts about speculation is that you often learn the most from your losses. So in effect losing is not such bad news, as long as the losses are kept under control. And you keep losses under control by taking on small positions. Then, even if you make a complete mess of things it's not a problem.
This is why I always say, start small, ease into the game for the first few months and then begin to increase the size of your account when you feel more comfortable. For example, if I were planning to open a spread betting account with £3,000 I'd only pay in a maximum of £500 - £1,000 to start with.
I would also make sure I fully understand the mechanisms behind spread betting, including all the different orders as well as the online trading platform. All of this takes time.
So be smart, start with small positions and you'll give yourself a far better chance than new traders who charge in.