#1667
Microsoft Excel is the powerful, widely used and most popular spreadsheet software. Almost every computer user should use it sometime, meanwhile it is also a relatively complex software to use.

#1620
Head First JavaScript Programming is an outstanding JavaScript tutorial pays attention to practice. For some web front-end developers who can not understand the popular JavaScript frameworks well, there is no more suitable book than this one. If you have JavaScript basis, just directly start from Chapter 10: Liberated functions.

#1593
Head First Java is a complete learning guide for object-oriented programming and Java. If you really want to learn Java instead of looking for a reference, then you will need this book.

#1542
C# (read as 'C Sharp')  is a simple, modern, object-oriented, and type-safe programming language derived from C and C++, which attempts to combine the rapid development ability of Visual Basic and the powerful flexible feature of C++. Programmers who understand the C or C++ will be able to become familiar with C# at once.