Games Workshop today launched the new Age of Sigmar site where you can download the rules for free. There is a lot of prep going on today as the new version of the game is all up for pre-orders tomorrow morning. However, with the rules free today.... you can jump right in and start checking out the latest.
Here is the new Site
https://ageofsigmar.com/
Free Core Rules for the Age of Sigmar
https://ageofsigmar.com/wp-content/uploads/sites/12/2018/06/AoS_Rules-ENG.pdf
Here is Duncans Introduction into the game.
How to Play with Becca Scott