how to blog


I am a new user and i am really confused. I wanted to put this review on my blog or i want to blog. But i do not see any icon where i can click so i can post my blog.
On the top i see there is an icon that says 'blog' , but when i click it, i can only see other people's blogs in a list with a summary.
Below at the end of the page there is also an icon that says 'blog', when i clicked it, the same thing happens, only other people's blog came out and there is no icon or option anywhere for me to write my own blog.
What's happening here?

How do I password protect my Tablet


I would like to have my tablet ask for a password when I turn it on. Does anyone know of an app that will do this?