Javascript - what programmer should know about - difference between java and c#

Tips and tricks in javascript and things you need to know comparing to java and c#

What is bookmarklet and how to use them (google map)

Bookmarklet is javascript code, which you can run quickly from any bookmark in your browser.

For example I want to remove search panel in google map, because I would like to print entire map

Online services (urls) which each IT guy and programmer should know

Useful on-line free service that you should know

1) google services

search engine google.com
drive - storing files https://www.google.com/drive
docs (word, excel, powerpoint) https://docs.google.com

calendar https://www.google.com/calendar/