As the world's top Excel expert, nobody knows more about Excel than John Walkenbach. And 101 Excel 2013 Tips, Tricks and Timesavers is one of the most classic works for Excel, which can help you easily work out report forms, become good at data analysis, fast beautify the Excel charts, etc., almost in one hour.

JavaScript and JSON Essentials focuses on teaching you about effective information transfer and local storage between JavaScript and JSON. Again, it also intersperses with simple Ajax, jQuery and PHP (mostly are with a few cursory lines). On the whole, it is a getting started guide about learning JavaScript & JSON.

For beginners who want to develop, create their own websites or work on website front-end design, then HTML and CSS are two fundamental programming languages must be mastered - because they completely control the structure and appearance of the whole webpage/website together. Fortunately, they are also the easiest to learn two among all programming languages.

Every innovation of C# marks an important growth for this programming language, but the concomitant is a more steep learning curve. Therefore, looking for a detailed and easy to understand studying material is very important. Fortunately, this Programming C# series of international bestsellers published by O'Reilly has provided great help to C# programming beginners and programmers with certain basics.

Today, wireless network has got very extensive application because of its convenient use and structure, and will eventually cover every corner on the earth, I believe. But due to its broadcast form of data transmission in a wireless network environment, that will inevitably lead to security issues. Of course we can ensure data security by setting different encryption methods in a wireless router, but some loopholes of Wi-Fi network or the router itself can often make every trained hacker be able to crack/hack it.