How to reproduce a fold effect in Illustrator?

Thanks everyone for the replies, also tromboniator​​ and @Doug A Roberts (I couldn't find your user on mention suggestions, sorry ) for the step-by-step instructions. I will practice using both ways, but I think the Peter's one is easier, at least when looking at it.

I don't know if it's just me, but I have so much difficulty to see the logic in the arts behind logos, I mean, Bojan Živković​ told me about the overlapping, and I just couldn't figure it out since it's something relatively simple. I'd like to ask if you are able to see those logics because you already made something similar or if someone taught those things to you. I'm a web designer but I really wanna be good at logo design, which is for me the first and most important step of the whole thing behind a brand.

With a bit of effort you could make custom "Art Brushes" using the "Stretch Between Guides" feature to create the look.

Here's one way to do it.

Peter

Have you tried to create multiple objects and overlap them paying attention on position of object stack? In essence white part of the logo seats on top of the red part, do you understand what I mean?