Steps

1. RetroArch
2. The most used application for emulating all available consoles
3. http://buildbot.libretro.com/nightly
4. Settings
5. Home -> Online update -> Click on "Update informations files"
6. Home -> Online update -> Click on "Update assets"
7. Home -> Online update -> Click on "Update controller profiles"
8. Home -> Online update -> Click on "Update cheats"
9. Home -> Online update -> Click on "Update databases"
10. Home -> Online update -> Click on "Update overlays"
11. Home -> Online update -> Click on "Update GLSL shaders"
12. Settings -> User -> Pseudo -> __SET_YOURS__
13. Settings -> Inputs -> Haptic return -> Check "Vibrate on each key"
14. Settings -> Inputs -> Haptic return -> Check "Activate device vibration"
15. Settings -> Inputs -> Menu keys -> Uncheck "Reverse OK / Cancel keys"
16. Settings -> Folders -> Change "Downloads" with the root folder of your ROMs to save time
17. Settings -> Backup -> Checked "Increment instant backups"
18. Settings -> Videos -> Scaling -> Aspect ratio: 16:9
19. Settings -> Videos -> Scaling -> Checked "Full scale"
20. Settings -> Videos -> Checked "Hardware synchronization of the processor"
21. Settings -> Videos -> Hardware synchronization images of the processor: 3
22. Settings -> Success -> Create an account on retroachievements.org
23. Settings -> Success -> Login: __YOURS__
24. Settings -> Success -> Password: __YOURS__
25. Settings -> Success -> Checked "Rankings"
26. Settings -> Success -> Checked "Success badges"
27. Settings -> Success -> Checked "Automatic screenshot"
28. Cores
29. > Load Core -> Download Core (use search option and type only the name in parentheses)
30. Nintendo - DS (DeSmuME)
31. Nintendo - Game Boy / Color (Gambatte)
32. Nintendo - Game Boy Advance (mGBA)
33. Nintendo - NES / Famicon (Mesen)
34. Nintendo - SNES / SFC (Snes9x 2010)
35. Nintendo - Nintendo 64 (ParaLLEl N64)
36. Nintendo - Switch (ParaLLEl N64)
37. Sega - MS/GG/MD/CD (Genesis Plus GX)
38. Sony - PlayStation (PCSX ReArmed)
39. /!\ Mednafen = Beetle for RetroArch, but Beetle PSX (HW) is for PC!
40. Exceptions
41. Some cores are not available for the moment, but you have alternates solutions.
42. On Android (must have OpenGL 3.2+)
43. Simply use "Nintendo - 3DS (Citra)" core
44. Simply use "Nintendo - Gamecube / Wii (Dolphin)" core or Use directly Dolphin APK
45. Nothing (for the moment) for WiiU
46. > Dolphin for Switch
47. https://dolphin-emu.org/
48. On PC/Linux/Mac
49. Simply use "Nintendo - 3DS (Citra)" core
50. Simply use "Nintendo - Gamecube / Wii (Dolphin)" core
51. > Cemu for WiiU
52. http://cemu.info/
53. > Yuzu / Ryujinx for Switch
54. https://yuzu-emu.org
55. https://ryujinx.org
56. Create a CUE file for PlayStation
57. Go at Nielsbuus
58. http://nielsbuus.dk/pg/psx_cue_maker/
59. Drop one bin file
60. Copy paste the result in a text file
61. Name it exactly as your bin file, but with ".cue" extension
62. Delete a Core
63. Load Cores -> __THE_CORE_WANTED__ -> Informations -> Core information -> Delete core
64. Problems solver
65. If you have message "Your saved data is corrupted" at startup, change the save type to "Flash 128K" instead of "Flash 64K"
66. Controller
67. > The most used controller is 8Bitdo SF30 Pro Manette Bluetooth, because it works on Windows, Steam, Android, macOS, Switch and Raspberry Pi
68. https://www.amazon.fr/gp/product/B07JVLQKBH/
69. Update the Firmware:
70. https://support.8bitdo.com/firmware-updater.html
71. /!\ To avoid the problem of auto-incrementing the port when you run out of battery while using RetroArch, just go to another application and come back, then turn on the controller!
72. Cheats
73. Quick Menu -> Cheats -> Load Cheat File -> __YOUR_CHT_FILE__
74. /!\ Don't forget to enable the Master Code + Apply on game startup!