I have edited our lectures on socionics for Bulgarian psychologists and uploaded the socionic manual here:

Part 1:
http://www.socioniko.net/en/articles/lytovs-intro1.html

Part 2:
http://www.socioniko.net/en/articles/lytovs-intro2.html

Part 3:
http://www.socioniko.net/en/articles/lytovs-intro3.html