After creating a database, unzpip the .zip file you donwloaded and upload the contents of STSCommerce folder to your server root folder (usually called www or html or something similar), shared hosting providers usually have a web based file manager, but you should use something like Filezilla to do the upload as the web based managers can cause various problems fairly often.
Please note: STSCommerce needs to be installed in the root folder (“/”) of your hosting/domain name. Installing in a sub domain or sub folder is going to generate certain issues.
First thing you want to do before installing STSCommerce is to create a new database on your mysql server. If you already know how to do this/or have already created one just skip to the next step.
If your hosting is running Control Panel like cPanel or DirectAdmin, just login to these Panels and follow the instructions on the screen to create a new database.
For VPS or Dedicated Server running Linux, execute following commands:
mysql -u root -p
CREATE DATABASE IF NOT EXISTS stslanding_db;
Creating new user
CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON stslanding_db.* TO 'newuser'@'localhost';
Open a browser and access your site URL. At the first time, a setup wizard will show up. Just follow the instruction on the screen and complete the setup.
Note: if you want reinstall, just delete the file /installer_config.php and open your site URL.