pickSaaS - Hundreds of SaaS products, analyzed.
Everything.PM - 300+ resources & tools for PMs, sorted by votes
Look at that SaaS - Inspiration and resources for SaaS founders
PM Starter Pack - Practical guide on how to get started in product management
Inside SaaS Sales - 1000+ sales emails and voicemails from top SaaS companies
Product Manager Handbook - Interviews w/ product managers + weekly newsletter