Tutorials

Cache invalidation: Step-by-step tutorial on how to invalidate and purge your cache.
Caching POST requests: How to cache POST requests with Varnish.
Configuring systemd services: Step-by-step tutorial on how to manage configuration of systemd services.
Enabling logging with varnishncsa: Step-by-step tutorial to enable request logging with varnishncsa.
Getting started: How to install and get started with Varnish.
Let's Encrypt with Hitch and Varnish (CentOS7): Step-by-step tutorial to setting up Hitch with automated and free certificates from Let's Encrypt.
Logging Hits and Misses: How to tag request type (hit, miss, pass, etc.).
Object lifetime: TTL, Grace, Keep: Tutorial to understand objects lifetime.
Securing multi tier Varnish environments: How to make sure certain Varnish tiers are only accessible by other Varnish tiers.
VSL cheatsheet: varnishlog, varnishncsa and ready-to-use VSL queries.

Manuals
Varnish Live
Varnish Cloud
Varnish Cache Plus
Varnish High Availability
Varnish Administration Console
Varnish Custom Statistics
Varnish Broadcaster
Varnish WAF
Varnish Controller

News
Varnish Controller 2.0.2
Varnish Controller 2.0.1
Varnish Controller 2.0.0
Varnish Cache 6.5 / Varnish Modules 0.17.0 Denial of Service
Varnish Cache Plus 6.0.8r1
News archive