I just wanted to share my video list that I send to players - it is by no means complete but it's got enough meat on the bone to get the job done...
Begin Here Videos:
https://www.youtube.com/watch?v=-MeVxKZBOfM Lore – Warhammer 40k Lore in a Minute!
https://www.youtube.com/watch?v=zoj7woIww0g Vaults of Terra – An Intro to Warhammer 40k Universe & Lore
https://www.youtube.com/watch?v=zmZcIX5PEyo Luetin09 – EXPLAINED – What is Warhammer 40,000 | Beginners Guide to 40k Lore
https://www.youtube.com/watch?v=QpGMo0sDEvE Arch Warhammer - 40K Intro
https://www.youtube.com/watch?v=3HvYrCFlSIc Arch Warhammer - The Imperium of Man (Good to watch if you want to learn more about human perspectives and culture in 40K)
SKIP TO THE INQUISITION
https://www.youtube.com/watch?v=FgHZXHJcrkc&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=15 (The Inquisition)
Fluff for the Uninitiated
https://www.youtube.com/watch?v=rqhUl4I7tUs
Episode 1 (Imperial Dating System)
https://www.youtube.com/watch?v=IsWD8KVAUeg
Episode 2 (The Warp)
https://www.youtube.com/watch?v=bdZ4rOY6hLI
Episode 3 (The Gods of Chaos)
https://www.youtube.com/watch?v=vCX4tEdfo30
Episode 4 (The Adeptus Astartes)
https://www.youtube.com/watch?v=jWeE8scM1Eo
Episode 5 (Space Marine Equipment Part-1)
https://www.youtube.com/watch?v=LJ2YdbyP13U
Episode 6 (Space Marine Equipment Part-2)
https://www.youtube.com/watch?v=sf1wEkgyL8g
Episode 7 (Orks)
https://www.youtube.com/watch?v=jDlhhY8hHKM
Episode 8 (The Primarchs Part-1)
https://www.youtube.com/watch?v=MX5h6rgGOK4
Episode 9 (The Primarchs Part-2)
https://www.youtube.com/watch?v=CwgdmmUQwig
Episode 10 (The Primarchs Part-3)
https://www.youtube.com/watch?v=R3BpWb4hUNg
Episode 11 (The Primarchs Part-4)
https://www.youtube.com/watch?v=hPGtJpEw8oE
Episode 12 (The Primarchs Part-5)
https://www.youtube.com/watch?v=oF5dE8Ry6bs
Episode 13 (The Tyranids)
https://www.youtube.com/watch?v=wI8swc8t7AY
Episode 14 (Technology in the Imperium)
https://www.youtube.com/watch?v=noX__JBkuzw
Episode 15 (The Inquisition)
https://www.youtube.com/watch?v=vHOziwbKlGM
Episode 16 (The Tau)
https://www.youtube.com/watch?v=U95EK6TRCI0
Episode 17 (The Necrons)
The Vaults of Terra
https://www.youtube.com/watch?v=OTwRFvpP8T4&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y
Playlist 1 (Overview Videos)
https://www.youtube.com/watch?v=eSKkjPtkAeE&list=PLvIuvM-ZW2yLMb8TPJ8JxuCQeA4-_s7_i
Playlist 2 (The Imperium of Man)
https://www.youtube.com/watch?v=2UaVi19PTa8&list=PLvIuvM-ZW2yLX7Ro8rqbhRKEBDI8BwjHf
Playlist 3 (The Imperial Guard)
https://www.youtube.com/watch?v=OTwRFvpP8T4&list=PLvIuvM-ZW2yIXby-iagjOeZK4MJo5IpEt
Playlist 4 (The Space Marines)
https://www.youtube.com/watch?v=BdjBWUMrcRY&list=PLvIuvM-ZW2yJDpsOm67cST9tdbSan4MQR
Playlist 5 (Chaos and the Warp)
https://www.youtube.com/watch?v=6QBvH9dyY2U&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=6
(Orks & Orkoids)
https://www.youtube.com/watch?v=M5l5WoSiN1U&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=7
(Tyranids)
https://www.youtube.com/watch?v=TRQL-dddn8Q&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=8
(Craftworld Eldar)
https://www.youtube.com/watch?v=q-7fNvuSRxE&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=9
(The Tau Empire)
https://www.youtube.com/watch?v=6ibbUCwCPNk&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=10
(The Necrons)
https://www.youtube.com/watch?v=UZ_WBEU9_e4&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=11
(The Horus Heresy)
https://www.youtube.com/watch?v=-UA88zu4sXQ&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=12
(Dark Eldar)
https://www.youtube.com/watch?v=-BfqZIyqZf4&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=13
(The Adeptus Sororitas & Sisters of Battle)
https://www.youtube.com/watch?v=mb3hDSHKSVs&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=14
(Adeptus Mechanicus)
https://www.youtube.com/watch?v=0YSE3CEhs1s&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=16
(Ordos Tempestus)
https://www.youtube.com/watch?v=O6MfM-Q59Ow&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=17
(Adeptus Mechnicus) Titans & Knights Overview
https://www.youtube.com/watch?v=dubT9TuXkN0&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=18
(Officio Assassinorum)
https://www.youtube.com/watch?v=lFeD-CuB7PM&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=19
(Abhumans & Squats)
https://www.youtube.com/watch?v=UUslW3Uc-Jc&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=20
(Psykers & Navigators & Nulls)
https://www.youtube.com/watch?v=5UdAujh6Uxs&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=21
(Adetpus Arbites)
https://www.youtube.com/watch?v=mG3NageOxAg&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=22
(Space Marine Chapter Roundup 1)
https://www.youtube.com/watch?v=PYCbgCoxpHc&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=23
(Horus Heresy) Primarchs Overview
https://www.youtube.com/watch?v=gkgvKhWC4pA&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=24
(Horus Heresy) Lion El’ Jonson
https://www.youtube.com/watch?v=9lwbdlqRpwY&list=PLvIuvM-ZW2yKwMakcOVws0Q3oy2eOHj-y&index=25
(Horus Heresy) Perturabo
https://www.youtube.com/watch?v=OPtQBwFotoU
(Horus Heresy) The Great Crusad
Arch Warhammer
https://www.youtube.com/watch?v=QpGMo0sDEvE
40K Intro
https://www.youtube.com/watch?v=uSZ_wW0-FW4
Arch Warhammer - The Galaxy & Factions
https://www.youtube.com/watch?v=scCYN8PWrro&list=PLx6N3LVwgba1g-Tr9zFBKcBEnFBmU5HfH
40k Explained, Chaos Lore, the Warp, and its influence
https://www.youtube.com/watch?v=iHJ4pE1DgQA
The Unification Wars
https://www.youtube.com/watch?v=iKdcc6SF_qw
The C’Tan and the Necrontyr
https://www.youtube.com/watch?v=uSZ_wW0-FW4
The Galaxy & Factions
https://www.youtube.com/watch?v=vinbT_4pMT4
The War in Heaven (pre-human history)
https://www.youtube.com/watch?v=Co7BlnsAHZ0
The Black Crusades (After Horus Heresy History)
https://www.youtube.com/watch?v=vDU5rCWdsV0
Non-Imperial Titans
https://www.youtube.com/watch?v=TmhW4y3La2U
The Webway
https://www.youtube.com/watch?v=1SS_JuqksD0
Eldar Lore
https://www.youtube.com/watch?v=gxkWTQAHARs
Tau Battlesuits
https://www.youtube.com/watch?v=pNnzdWL8enA
Titan Weapons & Voidshields
https://www.youtube.com/watch?v=g6R2r9uBA40
The Orks!
https://www.youtube.com/watch?v=ict0UAjnPfk
Ork Painboyz
https://www.youtube.com/watch?v=4ZykQg8UHuM
The basics of Imperial Guard Planetary Assault & Defense
https://www.youtube.com/watch?v=Isuu0LTnzQQ
The Eye of Terror
https://www.youtube.com/watch?v=FVL3GL6Oymw
Terminator Armor aka Tactical Dreadnought Armor
https://www.youtube.com/watch?v=7LLslSImZnc
Adeptus Astartes Drop Pods
https://www.youtube.com/watch?v=3HvYrCFlSIc
The Imperium of Man
https://www.youtube.com/watch?v=bbLdATQ41lQ
Astra Militarum the Imperial Guard Lore
https://www.youtube.com/watch?v=fqhpn-aF0eY
Titans! God Machines of the Adeptus Mechanicus, Part 1
https://www.youtube.com/watch?v=a81HCOQLxaU
The Tau Empire, Part 1
https://www.youtube.com/watch?v=hDcmKtXbvCU
The Tau Empire, Part 2
https://www.youtube.com/watch?v=ep8zPCfMB1Q
Why is there Melee in 40k?
https://www.youtube.com/watch?v=cQYyLiZwosQ
Why is there Cavalier in 40k?
Luetin09
https://www.youtube.com/watch?v=KyPjE1Sn-Ts
The Emperor of MANKIND!
https://www.youtube.com/watch?v=GuEka-NHzPY
Old Ones & Eldar
AUDIO DRAMA & TALES
https://www.youtube.com/watch?v=QlueQmxuT5E
Mechanicum (Horus Heresy) Talks about EVERYTHING about the men of Mars aka Adeptus Mechnicus Cult
https://www.
youtube
.com/watch?v=M1O88QEsPOM
Heart of Rage (good action short story inside of a space hulk and has a Mechicus Cult “guy”)
https://www.youtube.com/watch?v=4XJocwIP2Us
Incorruptible
https://www.youtube.com/watch?v=4XJocwIP2Us
Throne of Lies (Good Insight into how a Navigator “does” aboard a voidship)
https://www.youtube.com/watch?v=ibbSbCyi434
Eye of Vengeance
https://www.youtube.com/watch?v=Yl65If7_SJI
Wolf of Ash (Horus Heresy)
https://www.youtube.com/watch?v=qdlXhz7H5lk
From the Blood (I think this one is about a Khornate Space Marine doing bad stuff LOL)
https://www.youtube.com/watch?v=qg1MrCyCmNU
The LAST Church
https://www.youtube.com/watch?v=tORy4LQO4ic
Holder of Keys
https://www.youtube.com/watch?v=9zwCDdjbL24
Space Hulk (I think this is a fan made audio tale – not too shabby)