HI, i want to ask how to map complex objects correctly, for example if a have a sofa, do i have to select each face and map it or there is a way to put the texture correctly on each side?
I assume you are talking about UV mapping right? I am afraid that UV mapping is really an art! You simply need to practice and practice for years before becoming to be a UV master!
Well, if you don’t have the time, just Unwrap > Smart Projections.
the basic thing with UV mapping is that you want no one to see your seams. so try to place them in places where they won’t be noticed. on the real seams of the sofa for example.