cheers sapper756 , there be thousands of systems master one at a time and stick to it for one season , then you'l get the best system ever and thats experience , then you may decide to look at other systems best time to do this is at end of racing season , but master one stick to it , see if there are areas where your lacking and improve , as for videos i dont find them very explanitory for new fanciers as the many videos that i have seen take for granted the watcher knows the ins and outs before viewing books tend to be more descriptive so therefore more informative , as for the Mark Cauldwels system i have heard of this flyer and yes he flys a good pigeon the choice is up to you but the Dave Allens book i would advise to anyone wanting to fly there birds on widowhood to reach top levels in this our sport . Good luck and enjoy your birds