So I came across this post (and indeed the entire forum) a few weeks ago and it looked promising, but decided to wait and see if there were any more info about it, but no new info has been posted about since I checked last, so I figured I'd just ask:
I'm a Linux user, I'm interested in trying this stuff, but I'm not at all sure where to go, and how this software is compiled, I gather there's two types of software; azpainter and azdrawer, or is there a super-program that encompasses both of them?
Keep in mind I don't really know anything about any of this, so if anyone could give me a quick rundown of everything, where to get it, what is possible to do with it (them), etc. Just gimme all info you have, please =)
Sorry for the double post, mods, but just want to chime in and say that AzPainter is on version 1.0.2 and AzDrawing on 1.3!

Anyway, I'll be more than happy to help you, Grifter! c: If it's not too much trouble, can you tell me which Linux distro you are using? I could provide some more specific information tailored to your distro if needed if you do this. c:
So, first things first! AzDrawing and AzPainter are two separate applications created by the author, AzSky. AzDrawing is black and white, 1 bit based drawing application for the purpose of making comics and smooth lineart whereas AzPainter is supposed to be like a smaller Paint Tool Sai like application which is essentially a small drawing and painting program that also has smooth painting, linearting, and airbrushing capabilities that use very small resources on your desktop. Both of these programs are now open source and free!
They originally were developed on Windows, but since the programmer changed his distro to Ubuntu, he decided to rebuild his applications in Linux. You can access both of these programs on his website here:
http://hp.vector.co.jp/authors/VA033749/linux/index.html On the above page, after it's Google Translated, will tell you how to download and compile the program.
If you are running a Ubuntu/Debian based distro (like Mint, the *buntu family, elementaryOS, Zorin, etc.), you can download the .deb files of the programs and unpack them like you would with an .exe or a .dmg file on Windows or Mac respectively. EDIT: Appears he removed the .deb files and you must compile all updates now! If your distro is Red Hat based, like Fedora, or any other kind of different base, you need to download the .tar.gz/.tar.bz2 file and then follow these compiling steps:
http://www.howtogeek.com/105413/how-to-compile-and-install-from-source-on-ubuntu/ This is specifically for distros that use apt-get. Some are use yum or pac man and they have their own way of doing the same thing, and it's virtually very similar. He also has these instructions on his site!
Hopefully, this helps!