Html Questions... Please Help?

i need answers

New member
Okay, I have been learning HTML 4 and I know HTML 5 is now available. (Not sure if the questions I'm about to ask will change because of 5)

First: What are the points of tags such as emphasis,(difference then italics?) strong, alt, variable, code, and keyboard text. Is it crucial that I get the smaller, less important tags right for each thing? Ex. I use italics instead of emphasis?

Second: Another thing I still am lost on is, how does data from form inputs be seen by the creator? Say I have a submit button, where does the info go? Or do you need different form of text such as php, sql, java, etc.?

Thanks very much for your help.
 
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