Youtubers

There are many videos related to Factorio on Youtube. Actually there are so many that it is easy to get lost in them. If you are looking for youtubers who have been involved with Factorio for quite some time, you might check the following channels:

Tutorials

NegativeRoot's recommended comprehensive set of tutorials
Aavak's and Shenryyr's coop-played beginner's guide (in progress).
Steejo sets up basic research in his tutorial LP series
Xterminator gives a hotkeys tutorial as part of his tutorial series
Gepwin presents the 20 Factorio life hacks
ColonelWill's train tutorial with Xeteth

Release Overviews

MangledPork Gaming shows new additions in 0.13
MangledPork Gaming shows new additions in 0.12
MangledPork Gaming shows new additions in 0.11

Lets Plays

Arumba with 4 friends play a Modded Multiplayer game
MangledPork Gaming starts the town series with specialised bases
NegativeRoot builds electric furnace field in his break the game series
Steejo attempts to get all achievements in his livestream series.
Arumba tests out the flamethrower in his 0.13 series
Zisteau expands his oil harvesting network in his Meiosis series.

Interesting videos

Serule Blue with Factorio Rube Goldbergio
FactorioSpeedruns with a speedrun in 0.12