i3 window manager

Not long ago, I've switched from KDE window manager (kwin), which I've been using for years, to tiling window manager i3. So far I've tried several different WMs but none has suited my needs perfectly, until now.

What do I expect from window manager:

• it should be highly customizable. It should provide ways to set keyboard and mouse shortcuts. In this way, kwin has been really great and that was the main reason I was using it.
• it should be lightweight. This was the main issue, which kwin and KDE desktop had. On the other hand, i3wm with Slim is very simple and lightweight.
• it should be fast. I don't say kwin was slow, but in comparison to i3, well, it is (:
• eye-candy... yes good looking windows are sign of a modern WM, but for me eye-candy isn't very important.

In this section I'll post how I've replaced Kdm and kwin with Slim and i3 and I'll show my configuration of i3.