My first step is to understand how to program my AVR. Quick googling and I've intalled AVR Studio 4.18 build 684. Version is important here, since there are a lot of issues with 4.19 (and later?) on forums and personal blogs.
I'm pretty familar with C and C++, so I've setup WinAVR to compile and build my future C programm for AVRs.
Also, I've bought breadboard (10$), wires (5$) and 10$ USB programmer (it actually russian one).
Today spent 25$
Total: 25$