Welcome to the game! You find treats from exploring the Hoofbeat Plains, or sometimes other players sell them in Market Trades so you can buy them there :)

 What do you mean by brushes?

We don't need to manually purchase care products for our horses. Just click on the picture of the brush and it will automatically clean-up your horse.

If that's what you're aiming for. 🙂

Ooooh, K. Thank you both!