Installing AMP (Apache, MySQL and PHP) have become quite easier with single wizard based installations available as a packet these days. Like using XAMPP, WAMP you can just install them and use. But with these setups, you will have (or will not have) less knowledge about configuring them each in your own way because they will present some user interface where you can directly do configurations by one click. You will not know what exactly required for changing something in Apache, PHP or MySQL. So to have knowledge on configurations on them according to your requirement, you have to install each applications individually. I always recommend to do that and configure them for your purpose.
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