Where can you learn more about biz dev best practices?

Try checking out Mixergy's interview with Harley Finkelstein of Shopify. He has some really good practices, you can find it here (http://mixergy.com/harley-finkelstein-shopify-interview/)

Can you be more specific about what you're looking for? BD breaks down into a lot of different responsibilities.

Sell what people want. Know your stuff. Be nice.