Free E-Books in PDF
My book on setting and achieving goals (check here). It includes all important scientific and empiric methods you should use, with major productivity methods.
A book on Design Patterns in real-world use, with examples in C#, on more than 50 pages (check here).
Also, I offer you some free materials, all in living GitHub repos:
.NET Developer Roadmap 2024. - The comprehensive .NET Developer Roadmap by seniority level.
DevOps Roadmap 2024. with learning resources (repo with more than 7K stars).
Cloud Product Mapping - All major AWS, Azure, and GCP services are mapped with links pointing to product home pages.
Azure Cheat Sheet - Every product, feature, and service in the Azure family