What are you favorite resources to find product marketing *workflows* and best practices & case studies regarding them?

I think the two you mention are solid. Thinking outside of just PMM workflows, in general PMMs need to be extremely tight with the customer and have really strong business and market context so I try to read a lot of industry (AdAge, Skift Table for Restaurants), and general business publications (NYT, WSJ, TechCrunch.) This is a question I get often, so if others have good resources, share them here!

I also love Drift and Intercom's blogs and handbooks! First Round Review also has some great case studies. 

For courses, I like Pragmatic Marketing [great PMM frameworks] and Reforge [growth-focused, but really valuable for PMM too]. 

I find a lot of PM-focused resources to be helpful too since there's often a lot of overlap between the roles - I've subscribed to the Product Manager HQ newsletter for years and often find valuable resources that way. 

I browse a number of different resources from here on Sharebird, AIPMM, Pragmatic, SiriusDecisions (Forrester), Crayon's blog, Medium (includes a number of different publications I recommend following such as Product Marketing Community, Women in Product, Project Product, The Product Launch, etc.) LinkedIn, Facebook (great Product groups here to join like Women in Product & Product Marketing Masters), and Twitter. So many PMMs have treasure troves of workflows, frameworks, and best practices they share on various blogs and social platforms.

I use Twitter Lists to customize my industry resources. I have different Lists for Product Marketing, Brand Storytellers (like Mike, I have AdAge in this group), ABM, Productivity Tools, Video Tips etc. 

The Product Marketing list includes Sharebird, Product Marketing Alliance, Product Marketing World, Drift, Gainsight, HubSpot, Lemonlight as well as prominent CMOs.

Here’s what some of the blogs I mentioned above are good for:

• HubSpot: Inbound Marketing
• Drift: Conversational Marketing
• Gainsight: Customer Success
• Lemonlight: Video Marketing

If I come across industry blogs that may not be promoted through Twitter, I create a bookmarked
folder on my desktop.

I would also check out Product Marketing Alliance. They have good blog content, a podcast, and a really active Slack Community. One thing I like about their Slack group is that it includes tons of Product Marketers from outside of the US/Canada, which adds great perspective. Another resource I find helpful but is more specific to the Mobile Apps space is the Mobile Presence Podcast.