Hi Katiesmith,
As a newbie, you have enough to worry about just keeping on your feet. Riders that are better than you will be experienced enough to watch out for you and stay out of your way. Don't vary your course radically, just be aware of others and they will avoid you rather than you having to avoid them.
I was kiting once and as I was passing a newbie friend of mine I waved and cheered him on, he took his back hand off the bar to wave back and immediately tomohawked his kite right down on top of me. I saw it coming and dived off my board to avoid being hit. I came up from underwater laughing so much I almost drowned myself. It was hilarious!
Don't take the sport too seriously, the most fun is when you are just goofing off with mates, not landing complex hard tricks.
DM
PS. I no longer wave at Noobs when crossing downwind of them at speed.