Ask HN: How do I choose an OSS license or find an OSS lawyer?

I am going to release my startup IP as OSS, what are the future consequences of this? Is there a lawyer-approved online resource that will help me choose an OSS license and anything else I need to know, like timing requirements to file for defensive patents, copyright etc? Where can I find general counsel with deep knowledge of OSS and is up to date on the BSD+Patents drama?