The web server should be up and running. You should be able to access it through your browser, by typing "127.0.0.1" in the address bar.
http://127.0.0.1is the "localhost", meaning "your computer": it is a loopback address which directs the browser to your local web server.
http://localhostare synonymous: you can use one or the other interchangeably, both send you to the root folder of your local web server.
Some web servers might not be able to start because their connexion ports (typically, port 80) are already used by another application.
This often happens when Skype is used. To stop Skype from preventing your local web server to run, go into the Skype advanced settings (Tools > Options > Advanced > Connections) and uncheck the "Use port 80 and 443 as alternatives" option. Restart Skype, and start your local web server again.
- The database server should be up and running. MySQL is where all of PrestaShop's data is stored. The AMP package should provide you with a clear indicator whether MySQL is running or not.
- The phpMyAdmin tool should be accessible. This is the web application that helps you handle data stored in MySQL. Its location depends on which AMP packaging you chose: it can be found at
http://127.0.0.1/phpmyadmin(XAMPP, WampServer, MAMP),
http://127.0.0.1/mysql(EasyPHP), or maybe at another location. Check your package's documentation – it might even provide a phpMyAdmin button of sort that would open the correct URL in your browser.