Dave Rujiter and Marc Lelijveld Which are both Power BI experts, have spent a good amount of effort into put together an amazing Power BI Cheatsheet that you can be downloaded for free from here. It contains a lot of tips and tricks that cover several topics such as Data Modeling, Report design, Power Query, and Dax.
Marc Lelijveld in this session will be discussing the Cheatsheet and explain most of the Tips and tricks in Power BI while actually demonstrating them in action and the reasoning behind every trick to achieve the most amount of performance also reducing the most amount of bugs.