Biz Dev Lessons? What do you want to know?

What types of biz dev topics are you interested in learning as a new entrepreneur or a member of a startup?

I'm collecting ideas to write guides for and create video courses for tech startups that need to know more about business development. I have a ton of topics that I feel would be good but I'm planning to write for startups so I thought I would ask here. If I get some good answers I'll hook up free courses for the posters. I realize this might not be totally relevant to all the startups here but I'm sure others will find the materials helpful.

Your questions could be about biz dev concepts, what software to use, or tactics etc.