You're a developer who knows nothing to WPF. Which is fine, except that you need to start coding your next application using WPF and the MVVM pattern.
Don't worry: I have you covered. I've been training hundreds of developers like you during 15 years, and converted my experience into this book. I know from experience teaching what takes more time to learn in WPF, and will spend time only where appropriate.
Plus this book is packed with exercises which build up into a full project: you develop a small e-commerce sample application. You'll allow users to browse for products, and you'll also create a back-end where users will be able to list and edit products.
Read this book, and you can code your WPF application within a week.