i am new to programming please tell me how to start it
Well, there are a number of ways to get into programming from a zero-knowledge level. One, popular, way is to watch the videos associated with this course and work your way through the material. All the material for the course can be found here - http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-00-introduction-to-computer-science-and-programming-fall-2008/index.htm Another is to find a basic book / website that leads you through examples that you code and run. A simple google search for "beginning programming" gave me quite a few leads that you could take. We're here to answer questions you encounter along the way, so really the big thing is to start coding - practice, practice, practice.
does i need a degree for getting in any company like Google or Facebook i am asking this because my grade are not that much good to get me in any collage
Jobs are available for those without degrees, for sure, as there is more demand for the work than there is a supply of people to do it. However, top-tier jobs at top-tier companies are going to look for individuals holding degrees first.
Google and Facebook have pretty insane demands gradewise, etc. I'm pretty new too, and sublementing the videos here with: http://learnpythonthehardway.org/book/ - It's well written and eases in the reader pretty well.
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