Add F# Functional Programming Textbook (#3258)

free-programming-books.md

@@ -1176,6 +1176,7 @@ Kerridge (PDF) (email address *requested*, not required)
 * [F# for fun and profit](https://www.gitbook.com/book/swlaschin/fsharpforfunandprofit/details) (ePub)
 * [F# Programming](https://en.wikibooks.org/wiki/F_Sharp_Programming) - Wikibooks
 * [F# Succinctly, SyncFusion](https://www.syncfusion.com/resources/techportal/ebooks/fsharp) (PDF, Kindle) (email address *requested*, not required)
+* [Functional Programming Textbook](https://www.overleaf.com/read/hcwwdfxvftfp) - Yusuf M Motara (PDF)
 * [Programming Language Concepts for Software Developers](http://www.itu.dk/courses/BPRD/E2009/plcsd-1-2.pdf) (PDF)