In this Magento 2 development quick start guide, you’ll learn the most important aspects of the platform. You’ll learn how Composer defines external dependencies, how the ViewModel interacts with the Model layer, and how Dependency Injection works. By the end of the guide, you’ll be able to build a basic online store and customize it further if necessary. And, of course, you’ll have all the information you need to customize your online store to meet your goals.
OOP is the most important aspect of Magento 2 development

If you’re not familiar with OOP, it’s worth learning more about it before you start working on your Magento 2 development project. The underlying architecture is based on Java, so you’ll need to check your OOP skills before starting any work. In addition to OOP, you’ll need to have knowledge of PHP, CMS, and MVC frameworks. Whether you want to build a customised shopping cart or a comprehensive website, you’ll need to know about these technologies and their applications.
Composer defines external dependencies in Magento 2

Using Composer to define external dependencies in Magento 2 is the easiest way to integrate third-party libraries and frameworks into your web store. Besides using the default configuration, composer also lets you customize your site and add or remove unnecessary modules. Once installed, composer checks for new versions and downloads third-party libraries, as needed. The process is also quick and easy. Here are some of the most common ways to use Composer in Magento 2.
ViewModel interacts with the Model layer in Magento 2

In Magento 2, the ViewModel layer is a subclass of the Model layer, where the data stored on an HTML page is accessed. This layer also holds business logic for the application and provides access to resources, such as the database. Higher-level views cannot access these resources directly. The persistence layer, which is a separate component, provides access to data storage resources. Currently, Magento supports several database formats.
Dependency Injection design pattern

If you’re considering using the Dependency Injection design pattern in your Magento 2 development, you’ve come to the right place. The Dependency Injection design pattern is a common way of creating software that decouples object creation from its usage, making components more flexible and testable. For example, a Product class is dependent on Taxation, while a Product’s taxation depends on the corresponding Taxation class. The process command method on a Product class reaches the dependency on the Taxation class.
Installing Magento via the command line

In order to install Magento 2, you can either download and install it from a website or use the command line. If you choose the latter option, you must ensure that you have the necessary permissions to make this work. You can install Magento in phases, for example, and use a different database instance. For this method, you must have administrative privileges on the server. You should be logged in as the owner of the file system, so you can enter multiple commands at once.

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