Im looking to write a new application in ruby/python which uses a feed from bloomberg and am stuck trying to find any documentation for using (or even setting up) Bloomberg
Did you check out some questions at SO on this. It might help you
Resolver is an spreadsheet implementation in IronPython and has a very good integration for Bloomberg API
Here is a simple Client access API which I wrote with the help of the mentioned links as well as some others. Not everything is implemented but it is a good start.
https://github.com/bpsmith/pybbg
The Bloomberg Open API (BLPAPI) v3.5 release now includes a native Python SDK.
http://www.openbloomberg.com/2012/11/21/open-api-blpapi-v3-5-x-released/