What if you want to develop multiple sites?
Here is the way I did it:
Step 1: Create a folder in the web server root document folder for each test site, example;
Step 2: Create a SQL database using myPHPadmin
Step 3: Unzip joomla files into each test folder above.
Step 4: Install Joomla in each test location, Note; Rather than create multiple databases you can use the same database each time but remember to go to the advanced tab and set the table extention differently for each test site. (This is good security for later anyway)