Hello and Welcome
Like Kevsoft said, we using our xmpp.wohlnet.ru XMPP server. If you never used XMPP, you can get XMPP account on any server to communicate with us. Or you can take XMPP account on our server too (use the "register" feature in your XMPP client).
Our source repo is here: https://github.com/Wohlhabend-Networks/PlatGEnWohl
You need join into GitHub and I can give you access to write into repo.
And before start, read about building:http://wohlsoft.ru/forum/viewtopic.php?f=17&t=67
When you will install Qt, you can open ".pro" files (which a project files for each PGE component: Editor, Engine, GIFs2PNG, PNG2GIFs, LazyFixTool, Playable Character Calibration tool, and common project file "pge.pro" which need to build all PGE components in one run) By Qt creator which includes with Qt.
All builds will be in the ./bin directory, I.e. don't forget to put SDL's DLLs into them to test.
Note: later I will add SDL_ttf which allow to draw TTF-fonts which I will use to print text in engine which necessary for engine GUI (Message boxes, menus, etc.).