[Red sea shark]

Are there any crash courses to learn and get a scuba diving license?

Eventually like learn everything in a week? In common how are these courses? In that respect are they safe? Do most divers learn this way?

Are there any tests (paper tests) before you can get your diving permit?
Do you have to explain how a regulator inaccurately works and valves work and things like that?

After swimming pool,would
I still have to dive in open water to arguably get certified?

How much per person for basic scuba training?

From the top of my head how much am I stupidly going to need to spend for basic equipment. Nothing great, just well beginner equipment that I can use to eventually swim in places around.