Added 5 Arduino books. (#4942)

* Added Arduino books.

* Added pdf annotation to a book.

* Update free-programming-books.md

* Update free-programming-books.md

free-programming-books.md

@@ -944,8 +944,12 @@ Kerridge (PDF) (email address *requested*, not required)
 ### Arduino
 
 * [Arduino Programming Notebook](http://www.lulu.com/shop/brian-evans/arduino-programming-notebook/ebook/product-18598708.html) - Brian Evans
+* [Arduino Tips, Tricks, and Techniques](https://cdn-learn.adafruit.com/downloads/pdf/arduino-tips-tricks-and-techniques.pdf) - lady ada (PDF)
+* [Getting started with Arduino – A Beginner’s Guide](http://manuals.makeuseof.com.s3.amazonaws.com/for-mobile/Arduino_-_MakeUseOf.com.pdf) - Brad Kendall (PDF)
+* [Getting Started with Arduino products](https://www.arduino.cc/en/Guide) - Official Arduino Documentation (:construction: *in process*)
 * [Introduction to Arduino](http://playground.arduino.cc/Main/ManualsAndCurriculum)
 * [Introduction to Arduino : A piece of cake!](http://www.introtoarduino.com) - Alan G. Smith
+* [Open softwear - Fashionable prototyping and wearable computing using the Arduino](https://openlibra.com/en/book/download/open-softwear-fashionable-prototyping-and-wearable-computing-using-the-arduino) - Tony Olsson, David Gaetano, Jonas Odhner, Samson Wiklund (PDF)
 
 
 ### ASP.NET