Whether you wish to be a hacker who is interested in hacking wireless network, web app, database; cracking password, software....; or want to engage in cyber security related works in the future, Offensive Security's Kali Linux (a penetration testing OS) should be always your main "battlefield" and "experimental field".
We came to this world, in the end, what is on earth the most important pursuit? Tal Ben-Shahar (known as the most popular lecturer and mentor) firmly believes that: happiness is the only measure of life, also the ultimate goal of all goals.
"What is happiness?" is a widely discussed topic in human society. Stumbling on Happiness will make you understand, happiness is not only a psychology, but also a science. We came to this world, what the heck is the most important for us? Happiness is the only standard to measure our life, and is the ultimate goal of all targets.