Add new book 'For the Love of Go: Fundamentals'

README.md

@@ -121,6 +121,12 @@ Solve your Go problems using a problem-solution approach. Each recipe is a self-
 
 With this book you'll learn to use Go, taking advantage of it's multi-threaded nature, and typed syntax. Starting your API implementation in Go is your first step towards what a rock solid API should be.
 
+### [For the Love of Go: Fundamentals](https://bitfieldconsulting.com/books/fundamentals)
+
+<a href="https://bitfieldconsulting.com/books/fundamentals"><img src="https://images.squarespace-cdn.com/content/v1/5e10bdc20efb8f0d169f85f9/1600164215221-HLMVVYHID6RTDEXHKKGO/ke17ZwdGBToddI8pDm48kPJXHKy2-mnvrsdpGQjlhod7gQa3H78H3Y0txjaiv_0fDoOvxcdMmMKkDsyUqMSsMWxHk725yiiHCCLfrh8O1z5QHyNOqBUUEtDDsRWrJLTmrMDYraMJMCQwFxTSOIP7LpSBEQpA-g5k6VTjWbSuadHJq0dp98hg5AZvIaPb3DoM/cover.png" width="120px"/></a>
+
+This downloadable ebook is an interactive introduction to the Go programming language, suitable for complete beginners. It introduces the Test-Driven Development (TDD) workflow in Go and guides you through implementing a complete Go package, test-first. You'll learn about testing with multiple cases, and how to test functions which can return errors.
+
 **Advanced Books**
 ---