Wubi documentation, tips, and troubleshooting are provided in the Wubi Guide
Wubi Support Forum
For support relating to the Wubi installer, you can ask in the Wubi forum
Ubuntu Support Forum
Ubuntu web forums (English) provide an excellent place for you to get support on Ubuntu post-installation issues and meet other Ubuntu users and developers. You should observe the Code of Conduct on these forums as you would on any Ubuntu list or site.
Ubuntu Chat Channels
There are a number of Internet Relay Chat (IRC) channels on the Freenode network (irc.freenode.net) used for support or development of Ubuntu. The best place to start for general help with Ubuntu or just to meet other Ubuntu users is #ubuntu or one of the many local language channels.
There is also a range of more specialised channels dealing with the derivatives #kubuntu, #edubuntu, #xubuntu as well as channels relating to development, bugs, LoCo teams, accessibility and documentation. You can see a list of current channels on this wiki page. When participating in Ubuntu IRC channels, please abide by the Code of Conduct
Click here for the official documentaion and here fore the community contributed documentation