Here's a free quantum treadmill

https://www.quantumplayground.net/#/home

You don't need a "real" quantum computer to mess around with quantum computing and learn how it works any more than you need a supercomputer to play around with algorithms and learn how they work.

most experts in that field do not have access to a quantum computer. For the longest times it was a very theoretical field. Having access to a physical machine will not help you for 99% of the knowledge you can acquire in that field right now.

Everyone forgets people have been doing quantum computing research for decades.

Shor's algorithm is from 1994.

i think you can. A very simple one - an optical based one, one qubit. Several thousand dollars of equipment of a typical university photon quantum entanglement lab.

https://en.wikipedia.org/wiki/KLM_protocol

not computer, but you can definitely get a quantum devkit (an "emulator") and dabble with it.

How can you get it?

Also, Azure let's you run quantum code.

You can in general start with these search keywords: qiskit caterpillar yosys.