1.

Сайт www.samba.org.ua

http://www.samba.org.ua/ - Kharkiv
2.
Guides for engineers

Guides for engineers

http://manual.h1.ru/ - Kharkiv
Guides for engineers.
3.
"Electronic WorkBench" manuals

"Electronic WorkBench" manuals

http://www.ewb.narod.ru/ - Kharkiv
"Electronic WorkBench" manuals - electric circuits development.
4.
13-th level

13-th level

http://thirteenlevel.narod.ru/ - Kharkiv
Documentation on programming; computer games, formats of files.