In your opinion what are some of the best websites that helps one to understand the features on the cell like drive, doc, memo, etc. And what you can usually do with them.

I am trying to find the simplest way when I am changing phones to keep all my pictures, notepad, messages, videos backup. If it can't be backup saved to the sd card, or whatever options I have to make the transition as simple as possible.

Any tips will be appreciated.

Thanks in advance.