Download the latest version of PrestaShop from the vendor's website.

https://www.prestashop.com/en/download

Unzip the file (e.g. PrestaShop-German-Edition-1.4.7.0.zip) to a location where you can find it again.

Next, open your FTP client (e.g. FileZilla) and connect to your FTP access data, 

to your web hosting package.

Then locate the folder you unpacked. Now select all folders and files

from PrestaShop, which are located in the unpacked directory (e.g. /presta).

Copy all folders and files to the selected root directory, which is normally "/htdocs". 

Wait until the transfer is complete.

Create a MySQL database and remember the database name,

login name and password.

A description of how to create a MySQL database can be found at 

following link:

How do I create a MySQL database?

Now open your browser and enter your domain name. If everything has been installed correctly, a page will appear, 

which looks like in the picture below. Select the language here and check the box 

in front of the text "I agree with the above terms and conditions". 

Then click on the "Next" button at the bottom right.

Enter your MySQL data in the following window. The server name is always localhost if you use 

have set up the database with us. Username, password and database name are specific. 

Once the data has been entered, click "Next" again.

Now create your personal page settings and, if necessary, the logo.

In the lower area you assign yourself the access data to the administration area of your shop.

For security reasons, you can also have the login and password sent to you by e-mail by ticking the checkbox

at the bottom of the page.

After entering all data, click on the "Next" button.

You will be notified that the setup is complete, but you will also be prompted to do so,

to delete the folder "/install".

Please reconnect with your FTP software to your webhosting package.

Then delete the folder "install" as requested.

Finally, change the name of the "admin" folder to any name you like.

Note that this is required to access the administration area of your shop.

You can then access this under "YourDomain.de/admin123" (according to the name you gave the /admin folder). 

access the administration area and edit and design your shop.

How do I create a category in PrestaShop?

How do I create a product in PrestaShop?