You can select the tutorial you want to purchase. You’ll receive the details and download link of the purchased course in your email. Star learning. 

Select the tutorial you want to purchase, click “Add to Cart” or “Buy Now”. You’ll be redirected to the checkout page. Fill in billing details, and make payment by selecting your desired mode of payment. After successful payment transaction, you’ll receive email to download the course That’s it.

After making a successful purchase of your desired tutorial, you will receive download links in your email, by clicking these links, you can easily download the purchased tutorial files in .zip format.
Now, to unzip these .zip files, you can use any unzip software, like; 7-zip for desktops and for mobile devices (Android) use WinZip or Google Files app and for iOS (iPhone) use Files app.

Judging by our experience, one can start learning even if you are 10 years old.