When brewing your own beer it’s a good to know some of the styles that are possible to create. Throughout history different countries and cultures have developed beers. Bringing their own tastes and environment to the beers creating characteristic qualities.
This is by no means a definitive list and will be added to in the future. I’m not particularly of the opinion you need to adhere to any particular style guidelines.
However if you know what’s possible from the outset you can adapt your recipes and brewing process. This opens up all sorts of possibilities by adapting existing recipes when you know the style of beer already works.
I also recommend you try as many existing examples of these styles as you can. It’s all about broadening your horizons and getting a feel for the different characteristics for each type of beer. Experience will mean you have a good idea of what you want to create in your own home brewed beers.