Sorted Apart

So, this is my first book. I have,like, NO expiriance in writing, but is anybody DOES please tell me if I'm doing this right, cos I have no idea. Please give me advice to make my writing better.

"Sorting" was something that happens to just about everybody here. On you're 16th birthday, they would "sort" you. The sorting is where they decide where to put you, like a pack. It was also used to help you find your soulmate. There were four packs of OakHeart High School. Dimond River, Autumn Leaf, Yellow Stars, and Dark Willows. All of the packs have alphas, betas, and omegas. However, that does not mean all the packs are equal. Dark Willows are the strongest pack in the school, and perhaps the world, (fantasy). Autumn Leaf is the second strongest pack, but not even close in comparison to Dark Willows. Dimond River and Yellow Stars are at a tie. Your pack is just like your feelings. If you were shy, you'd be a part of either Blue River, or Yellow Sun. If you were overly confident you'd be in Red Leaf. If you were unafraid, (is that a word??) and capable of doing difficult tasks you'd be in Dark Willows. However, it's not part of genes. For example, just because your parents could be Dark Willows, doesn't mean you would be. There's a mark that appears on the right hand when sorted into a pack. You also get a highlight in your hair the color of the pack. There's one rule, though. You. Can't. Cross. Packs. Nobody's soulmate has been in a different pack. Until now...(this was just a description about the packs. the first page will be character description. sorry bout that)