Form Customizations, Galleries, Nested Galleries, Important PowerApps functions like O365 Functions, TimerFunctions,Data Validation with IsMAtch Functions, DataCard Values formulas, Different Controls and their formulas for the App development, Groups & Components reusability, Custom Filtering, Cascadingdropdown, SharePoint Integration concept,Collection, ClearCollection, Patching, Repeating Tables, Tabbed Forms, Buttons with New, Submit, Edit, Save, Save Later & Finish, Close concepts, etc.