Hi, I'm trying to install Magento CE and after a couple or more failed attempts and start overs, I need some help. Here's what I've done. I downloaded the CE package magento-220.127.116.11-2015-04-30-12-49-08.zip from the website and uploaded to my root directory, then extracted it.
Next, I uploaded the downloader.php to the root directory as well and visited http://www.mywebsite.com/downloader.php
Check this tutorials for proper Magento installation steps: