This thread on the AI thinker website has documents for most of the modules although there does not seem to be anything yet for the latest ESP12F.
http://www.ai-thinker.com/forum.php?mod ... a=page%3D1
Docs are a mix of Chinese/English have not yet tried running them through a translator.
Espressif has a full summary of all their documentation here.
http://bbs.espressif.com/viewtopic.php?f=67&t=225