More wonderful awesome helpful resources for learning Power BI

Books

PBI for the Excel Analyst

Master Your Data

Supercharge Power BI

CTCD Power Query

The Definitive Guide to DAX

Performance Best Practice

Story Telling with Data

Big Book of Dashboards

YouTube Channels

Access Analytic

Guy in a Cube

SQLBI

Curbal

Power BI.tips

Excel is Fun (Mike Girvin)

Enterprise DNA

Skillwave

How to Power BI

Havens BI

My Online Training Hub

Excel on Fire

Goodly

Kratos BI

Chandoo

BI Gorilla

Avi Singh

Radacad

Microsoft Official

Blogs

Matt Allington

Radacad

BI Polar

Fourmoo

Melissa Coates

Imke Feldmann

Chris Webb

Ben Gribaudo

Kerry Kolosko

Meagan Longoria

Laura GB

Power Bi Tips

Metrics Treb Gatte

Paul Turley

Microsoft Official

Podcasts and Interviews

Kasper on BI

Raw Data - Rob Collie

BiFocal

Explicit Measures

Power BI Guy

Lars Schreiber SSBI

Wyn - Power Query Magic

External Tools & Helper Sites

DAX.guide

A list of all DAX functions and help with how to use them

DAXFormatter.com

Automatically format your DAX

PBI Cleaner

Find which measures and columns are used in your report

Bravo.bi

A quick way to analyze your data model and format your DAX. Includes ability to Export Tables to CSV

Tabular Editor (2 & 3)

Productivity Tool for the developer of Models. Write DAX in a separate UI, calculation groups, scripts, debug and more.  V2.0 is Free 

DAX Studio 3.0

DAX optimisation tool. Plus ability to export tables to CSV (watch video)

Business Ops Collection

A one-stop-shop for all the latest versions of many External Tools.