Hi! Welcome to EquusSims, my dude. Basically, this is a place to show off your equine-related creations and games in the Sims, role-play if you feel like it, build your own stable and make your own horses, characters, and stories. And you can share anything you make with the community!
If you're just looking for a tip for starting out, I'd browse the cc downloads and other people's albums to get some inspiration, then play around in the game and start to make your own ranch or stables or equestrian center or whatever you want. Just have some fun with it!