With this release, the paging issues and the no account defined error have been resolved. This will be the final release of Coinbase.NET until new changes (additions?) are introduced to v1 of the Coinbase API.
The best way to use this is to grab the code, add it to a project/solution and start poking around the Connector class. Also, feel free to run the test app. It won't actually buy or sell any Bitcoin (unless you change the values in the BUY or SELL calls.) The test app contains a complete test of every call in the API (even the deprecated ones.)
Read the code. It's all in there. And feel free to hit me up with any questions, or submit an issue if you run into any errors.