Thankyou Sir Quez, I have installed before this reply and actually, what I did, for now, was follow the installer guide for a full diskspace install because I tried first with a 10 gb install, but when I realised that I could actually make Debian work, it is not as difficult as I used to think, I just decided to stop working with Ubuntu, because Ubuntu to me was just a starting point to one day be able to work full time Debian. So I went ahead with the full disk space install, 40 GB.
However, because this laptop was bought as a secondary work laptop, whose purpose is proficiency self training in Debian, I am very probably going to do a new install one of these days, and perhaps then I will choose 0 swap.
I chose the guided swap management that automatically suggested 1.4 GB SWAP.
So I installed, no GUI. After installing and starting the TTY1 command line, I installed xorg, then fluxbox.
Now I am in the process of installing the applications I need to work.
It is very nice to actually "build" your own operating system and keeping it so streamlined and "skeletonized".
Do you, Sir Quez, agree that I should keep all applications inside the X system in the sense that I will not install Kfoo (Okular), (Kate), "K" or Gnome products so that they don't install libraries from those desktop managers and therefore keep this operating system at a minimum resource usage and maximum efficiency?
I am therefore installing Xpdf instead of Okular, and avoid installing any file manager.
I believe this thread has been resolved, and thankyou again.
Now i need help setting up a good wifi manager, light and reliable. Possibly not much to choose from. And I also need help with the audio drivers and setting up an external screen. The type of operations that kept me from going directly from windows to Debian without first adapting to Ubuntu.