How to get a League of Legends PBE account for Teamfight Tactics - The Rift Herald
Riot Games Support on Twitter: "📢The PBE is currently down for maintenance and the PBE Sign up page is being looked into! Hold tight while we work to get things back up
How to get a PBE account for League of Legends - Dot Esports
League of Legends: How to create a PBE account and access Beta content