Unofficial guides :
[manual install on Linux]
http://how-to.linuxcareer.com/lamp-installation-of-question2answer-on-ubuntu-linux
http://www.howtoforge.com/running-question2answer-on-nginx-lemp-on-debian-squeeze-ubuntu-12.10
[cpanel install on Linux]
http://www.youtube.com/watch?v=XV5RR46NCmU (not very recent)
Official guide (it's not Windows specific) :
http://www.question2answer.org/install.php
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.