Product Lessons Weekly lessons to level up your product skills Subscribe Book Sponsorship Sent Weekly Accepts Sponsors English Product ManagementStartupDesignCareer Every Sunday, I share a lesson that will level up your product skills. Inspired by my adventures at one of the fastest startups to reach a billion-dollar valuation. Tools Substack Created By @thelindazhang Discover Interesting Newsletters Every week we share the best new newsletters as well as tips to start writing your own.