Settings for action shots with Kx

Hi am new to DSLRS and this site but am hoping I may be able to get some help...have purchased a kx after much deliberation but have only used a POS in the past and would like to take action shots of my daughter competing her pony, so jumping etc.. I would appreciate an idiots guide to setting up my camera to take multiple shots when the horse is moving, I hope that someone may help me?

Please don't post subjects twice in the forum. You'll get plenty of answers in your original thread!