The PowerShell team has once published the rich and detailed PowerShell 3 language reference, and since the core language never changed, this document is still extremely valuable and full of hidden treasures.
Grab the free documentation as long as it’s still available: https://www.microsoft.com/en-us/download/confirmation.aspx?id=36389
You are a PowerShell Professional, passionate about improving your code and skills? You take security seriously and are always looking for the latest advice and guidance to make your code more secure and faster? You’d love to connect to the vibrant PowerShell community and get in touch with other PowerShell Professionals to share tricks and experience? Then PowerShell Conference EU 2020 might be just the right place for you: https://psconf.eu (June 2-5, 2020 in Hanover, Germany).
It’s a unique mixture of classic conference with three parallel tracks filled with fast-paced PowerShell presentations, and advanced learning class with live discussions, Q&A and plenty of networking.
Secure your seat while they last: https://psconf.eu/register.html.