Analytics Pack - A curated directory of the best startup metrics
GrowthHackList - 100+ curated growth hacks for makers + early stage startups
Baremetrics Benchmarks - Benchmark your SaaS metrics with other startups
Growth Hacker Marketing - Ryan Holiday's book, re-released and expanded
Open Benchmarks - Live SaaS metric benchmarks from over 600 companies
Ryan Holiday - We Invest $500k in Sci-Fi Founders.