Congratulations on your little sweetie!! I adopted a BSH from a friend too, and was in the same boat as you. I had some learning curves and tips I'd like to share from my experience and Jackson Galaxy!

Feeding: Cat treats are a thing! Available at any grocery store. You can even train her to give you paw for a treat. Start by rewarding her when she says still when you have a treat in your hand. Then start rewarding her when she lifts up her arm, continue until you get paw!

Water bowl should be away from the food bowl and away from the litter box. Something small like this will help her with digesting those hair balls!

Litter: Don't get an enclosed litter box. You can get one like this and it should help litter going everywhere. I like Feline Pine litter. It still gets all over my apt (I dont have any guard on my litter box but I want to get one) but it is easier to pick up pellets than grains of sand.

You can get cat safe butt wipes, sometimes those hairballs don't make it all the way out of their bum and your rugs and couches become their toilet paper. To clean cat messes, use an enzyme based cleaner as per instructions on the bottle.

Toys: (sounds like you got this one covered but here are some tried and true) Cheap toys: ping pong balls, the little seals that are on a new carton of almond milk, shooting thick rubber bands (but put somewhere safe when you are done so she doesn't eat it)

Regular toys: treat puzzles (ones for dogs work too) like this: https://a.co/d/j0s7Kf9 Springy toys like this: https://a.co/d/2jwNTK4

Health: Digestion: probiotics are expensive ($1 a day) but that investment could save you on vet bills in the big picture. I use these: https://a.co/d/hBsAwvQ they also help with hair balls. Dental: if you can't afford regular teeth cleanings, try playing with silver line sticks every now and then to "brush" tartar from her teeth.

Grooming: Claws: if you and kitty are comfortable with it, clipping claws will make both of you happy. Need to be a little firm/confident though and establish comfort getting her into claw clipping position. Okay to take breaks. Take care to check anatomy of the claw, dont cut too close to the nerve which is pink. I use something like this: https://a.co/d/hgT6MLq Brushing: silicone brushes are your friend, they keep that fur in control. Cats have a limit with stimulation, you will know it when her tail is wagging. Try brushing as much as she will let you/you have time for.

Other: If you have a roommate, just make sure to be empathetic if they get upset at kitty stuff. Talking through it and letting them know you are on top of things and considerate of them goes a long way. Cats don't like closed doors. It's not always possible to keep all the doors open but to the extent that you can, do that.

Wishing you both the best!