I want to begin in reverse-engineering.
Creating or beginning to create an emulator stimulates me. Can someone give me some tutorials, keywords, links to where I should search if anyone knows this kind of stuff ?

Start by learning aseembly and processor architecture.

Search for "intro to x86" by Xeno Kovah

A good emulator / virtual machine that a lot of people (including myself) make is for a system called CHIP-8. There's a few good easily findable guides and the documentation on wikipedia is all you need to make it yourself. Let me know if you have any questions. I'm no pro on the subject but I can try my best to help.