I'm not sure if there is a thread for this elsewhere, but I'd thought I'd spread awareness of the The Vaults of Terra youtube channel. The Vaults of Terra is a channel setup to provide lore on the 40k universe the creators of the channel endeavour to chronicle all of the 40k lore given enough time. Going in depth into any lore they can get their hands on (this includes chapter by chapter, regiment by regiment videos giving a detailed breakdown of equipment fighting style etc.) The videos are made to a great standard and are produced by people who have real expertise with the 40k lore. Linked with their channel is their forum the Vox Relay a 40k forum where members can discuss any and all aspects of 40k, from the lore to the game mechanics all sorts. Regardless of your experience with 40k you're welcome as the idea of the vaults was to make 40k lore more accessible. So in conclusion a channel for those interested in the 40k lore regardless of expertise and a brilliant community if you want to discuss 40k with like minded individuals.