Everything.PM - 300+ resources & tools for PMs, sorted by votes
Taco Digest - Customizable personal email newsletter created from your favorite sources.
PM Starter Pack - Practical guide on how to get started in product management
Sponsor This Newsletter - 100+ newsletters ready to promote your product
Product Manager Handbook - Interviews w/ product managers + weekly newsletter
Startup Curated - The best of the week for founders, in one minimal email