ᐅ How can I repaint IKEA Besta units, and what preparations are necessary?

Hello everyone, I am planning to modify my IKEA Besta shelving unit by repainting it. My specific question is: What is the best way to prepare the surfaces so that the new paint adheres well and is durable? I am especially interested in which preparation steps are essential, which materials are recommended, and whether I should consider particular types of paint suitable for Besta surfaces. It would also be helpful to know if there are any special considerations when removing the doors or protecting the hinges to ensure everything still functions properly after painting. Looking forward to your experiences and tips!