Hello.
Thank you for your interest in quantum computing. I would have some difficulties responding specifically to your question about the link between black holes and quantum computing, but I can provide some directions.
1/ Access to quantum ressources. I recommend you to take a look at our quantum platform (https://quantum.ibm.com/) and speciffically to our learning part (https://learning.quantum.ibm.com/). You should find content that suits you. I also recommend to take a look at our qiskit youtube channel https://www.youtube.com/qiskit . Note you can already access some quantum computers on this platform for free.
2/ Black Hole and quantum computing. The link between quantum computers and black holes is explored by some physicists like Juan Maldacena or Marika Taylor. Note that it is a very active field of research at the moment. This goes well beyond my expertise, but if I had to start somewhere it would be here: https://www.ias.edu/ideas/maldacena-quantum-black-holes ; https://www.youtube.com/watch?v=861coSFLOvk
Hope it helps. Good luck with your investigations.
------------------------------
Francois Varchon
------------------------------