Not very likely that you will have any problems with Kdevelop. It ships with almost every Linux distribution.

As far as Kylix 3 is concerned, I have had no trouble installing it on SuSE 8.0 and on Debian.

I highly recommend using the Debian distribution. It doesn't have a graphical installation tool, and some of the system is not as automated as either RedHat, Mandrake, nor SuSE... BUT, it has the best system update mechanism, consists of over 10,000 packages (including Apache JSP, Kdevelop, and Anjuta), have the least trouble using new third party software with (I run Win4Lin and Kylix 3). Once I setup a Debian system, there is no maintenance for me to do... none. I run a Debian workstation here at work that I have not had to reboot (even after weekly automated upgrades to the system) for anything.

There is a price to pay for this god-like efficiency, though. You install Linux, you become a UNIX system administrator instantly, without training, without previous experience to draw from, and your only help comes from either the "install support" that ships with the product or the internet. Nevertheless, this can be a good experience if you prepare yourself for it, and dump all notions that your new Linux system is going to be just like Windows.

As far as Quickstarts on programming KDE / QT, there is material for that that installs with Kdevelop. You can read and search the docs within the IDE.

_Where to start with Linux programming, I would like to so something windowed (like the apps and that stuff that we can do with Visual Studio), but... no idea what's going on now on Linux...

I've heard that there is an IDE quite similar to Visual Studio IDE, but I've heard as well, that if you program a thing for KDE, then may it won't work for another linux windows environment and..._

I learned C++ on Linux and Solaris. Only in the last couple of years have I been using MSVC. Although I have grown to like MSVC, I do not consider it a good replacement for a solid shell environment (on *NIX).

Let me clear one thing up, the Linux windowing environment (the X Windows System) is not tied to the operating system. In fact, I currently develop my programs on Linux and re-compile them on Solaris without changing any code (so long as I have a KDE development environment running on Solaris). You can run programs developed in Kdevelop in any X Windows environment on the same platform. I run such programs in Solaris' CDE environment.

Kdevelop is not as advanced as MSVC. It is getting there, and is probably the best available for now. Some other contenders to watch for:

KDEStudio Gold (http://www.thekompany.com)
Is similar to Kdevelop but is a commercial product with better "intellisense-like" behaviour than Kdevelop's.

Anjuta (http://www.anjuta.org)
Is Gnome-based. Good product but still no stable release.

Kylix 3
This is Borland's free C++ Builder and Delphi for Linux. What is nice about these IDE's is that they produce project files and code that can be immediately used with the Windows versions of their products without modification. Excellent cross-platform product.

Mono for Linux (http://www.go-mono.org) is still under heavy development. There are no Visual Studio .Net - like IDE's for this, but Microsoft's own products are said to work with it.