To install modules and libraries in Drupal, it is best to use Composer. Composer is a dependency manager that automatically installs required libraries when installing a module. Although Composer makes module installation slightly more complex, it simplifies managing external libraries since it downloads and connects them automatically.

To install Composer, go to the official site:

https://getcomposer.org/download/

Module download:

drush dl module1 module2

Module installation:

drush en module1 -y

Module removal:

drush pm-uninstall module1 -y

Module disable (without uninstalling config):

drush pm-disable module1 -y

Enable all required modules listed in a file:

xargs drush en -y < modules.txt

Drupal installation with selected Russian language:

Many users need websites with common features found across various platforms: online stores, forums, classified ads, and coupon sites. In Drupal, you can build not only core functionality but also ready-made features available immediately after installation. These pre-packaged Drupal setups are called installation profiles or distributions. You can browse and download them for free at:

Drupal Installation Profiles

Drupal core and module updates are released frequently. While not all updates are necessary, security updates are critical and are highlighted in red by Drupal. Your update method depends on how Drupal was installed: via Composer or by downloading from Drupal.org.

Updating Drupal Using Composer

Composer makes it easy to update Drupal core with a single command:

If you installed Drupal by downloading it directly from the official site:

https://www.drupal.org/project/drupal

You may face issues updating Drupal using Drush or Composer, as the standard method won’t work. In this guide, we’ll go over how to update Drupal manually by replacing files — without using Drush or Composer.

First of all, to install Drupal Commerce, you’ll need Composer:

https://getcomposer.org/download/

Composer is a package manager for PHP. It allows you to download and include PHP libraries in your project’s autoloader — in this case, for your Drupal 8 site. Drupal 8 already includes many third-party libraries, especially from the Symfony framework.

Video from Drupal Training Day – December 1, 2018 – Drupal Commerce

10:00 – 10:45
Introduction.
Commerce Kickstart or build the site from scratch?
Environment check: Installing Drupal and Drupal Commerce.

10:45 – 11:00
Tea/coffee break, discussion.

Back in Drupal 6, there weren’t many options for e-commerce — Ubercart was the most successful solution, with a huge ecosystem of modules. But for Drupal 7, a new module emerged: Commerce.

http://drupal.org/project/ubercart

http://drupal.org/project/commerce

Both platforms have ready-made distributions: UberDrupal and Commerce Kickstart, which you can download and explore:

Downloads:

You may have encountered an issue with an outdated PHP version for Drupal and seen the following error:

Your PHP installation is too old. Drupal requires at least PHP 5.4.5. See the system requirements page for more information.