Took me a few years to get the hang of it all having ridden road bikes for 30 years before....and I'm still not that great ! I got into as I got fed up with chasing around after my son...and it's one of the best things I have done. My problem was, and still is, approaching things too fast....my throttle only seemed to go one way ! As others have advised, don't worry about being 'last' or your score but set yourself some realistic targets. I remember the first time I scored less than 100 !! I still have some really bad days and laps....but they are now fewer than the good ones !
I do it for fun...so if I'm still smiling at the end then I'm a winner !