Added a Visual Basic book. (#4945)
* Added Arduino books.
* Added pdf annotation to a book.
* Added a book.
* Removed trademark symbol.
* Revert "Removed trademark symbol."
This reverts commit d8f975f38cfd8d11696b61910cf05316e5ba9480.
* Removed Registered trademark symbol.
* Revert "Added Arduino books."
This reverts commit 5718d13540a4cbe1001b9aee64d3f34b5251cddc.
* Swapped books to set alphabetical order.
* Update free-programming-books.md