Handling URL Request - Joomla! Forum - community, help and support

hello everyone.

my name lee , cs junior student in texas.
i totally new web server programming , first time in joomla. totally lost @ moment.

here i'm trying achieve.

i need create blank website handles post request, accesses database, , returns fetched table. have finished setting xampp , installed joomla 2.5.

what should next move?

thank you.