1) Fry garlic in oil, add squid & black pepper.
2) Add onion.
3) Add bell pepper.
4) Add tomatoes.
5) Add rice and saffron (you can mix the saffron with the fish stock).
6) Add fish stock. Make sure it's salty enough. You can mix the stock with some lemon at this point.
7) Fry some prawns separately.
8) Let it simmer on the stove top until the rice is half done (15 minutes).
9) Put the paella in the oven until the rice is done and the paella has a crunchy top.