Hello,
        I would like to ask, if anyone can help me, what do I need to do as a beginner, to learn SQL and the concepts of databases.
I want to make my career as DBA or later maybe Developer.
And there is an ocean of information on-line and its hard to decide where to start. To understand the whole process.

Thank you very much in advance.

I don't know if there is a "right" way to go about it.  I know that I took some classes in college and then got a job as a corporate analyst and learned that way.  I listened to our DBAs, asked them for advice as needed, and applied what I learned.  After two years I would say I am now "intermediate" and am looking for a Jr DBA level position.

Good luck.

It depends on what type of learner you are. If you're comfortable with being a regular student you should take classes, whether via college or separately. If you're more the autodidact, you can get a good book or read some websites dedicated to SQL with tutorials. Then what you need to do is play around, trial & error, trial & error. But dont make the mistake of hesitating too long, you need to be determined and "just do it".

Same here I am looking for a comprehensive links where I can learn sql easily.

Thanks in advance. 

I just joined because I want to learn SQL. I need it for my accounting class. I am tried of studying alone for this.