Webull helped me learn. They have a really good platform for everything but trading stocks. I use it for research and learning. I want to try ibkr and fidelity next, though.
Why is it?
Like fusion there is no such thing as quantum computing. It does not exist outside of a laboratory setting and currently serves no useful purpose.
A quantum computer cannot even reliably calculate 10 x 10.
Honestly, for something as basic as simple calls and puts, investopedia is a good place to start. Then as you learn, you can ask more specific questions.