Hi David,
First of all you are welcome to forum.
You need to follow SAP Business One SDK Forum. You can follow it from SAP Business One SDK
Here you will get the opinions and replies for your questions from the experts.
Secondly about your questions, you need to install SAP B1 in your system with SAP SDK, DIAPI.
Then in your start menu you will get the SDK Help Center. It contains all the samples that are being used in SAP B1 SDK. Also there are samples available like making a connection to SAP B1 Company and all.
Hope it is helpful..
Thanks & Regards
Ankit Chauhan