Looker Tutorial- How To Become A Successful Looker Developer

November 29th, 2023
Looker Tutorial

Data Economy is a real winning term these days and the reason behind its raging success is our increasing ability to consume, read, and gather actionable insights from the data at hand. Employees and executives of any company need reports, however, the procedure is time-consuming and complex. This often leads to the insights becoming obsolete by the time the reports arrive.

It is under these circumstances that Looker emerges as a valuable name. Looker brings a flexible data platform to the table that allows teams throughout the business to visualize data as well as collaborate on insights. This Google Looker tutorial will take you on a journey to understand how to become a successful Looker developer. Let's begin!

An Introduction to Looker

Looker is a globally used data visualization and business intelligence (BI) platform that facilitates businesses in transforming their raw data into actionable insights. All this exploring, sharing, and analyzing is done in real-time and thus, proves to be a good competition to Tableau and Power BI.

Looker is both browser-based and completely on the cloud. It also consists of a reliable data model as well as a language called LookML.

Looker Tutorial - A Peek into the Key Aspects

If you are interested in learning more about its language, then a LookML tutorial will be more beneficial. In this blog, however, we will give you a peek into the key aspects of this platform.

Looker Fundamentals

It is important to understand the fundamentals of any field and that is what a good Looker training online will do. Be it data exploring, visualizing, or modeling, be it building impactful and timely dashboards and reports, or be it sharing fresh insights, Looker does it all!

Looker Features

Here are a few key features of Looker:

  1. LookML

It is a structured model language which facilitates in doing complex operations like filters, aggregations, and joining and is widely used for constructing SQL queries based on a particular DB.

  1. Reports & Dashboards

Create reports and dashboards for saving and replaying your work, along with adding custom filters.

  1. Data Model

With Looker, you can create a complete data model in LookML in addition to your raw data. This facilitates in clearly defining the connection between the standard metrics and your data.

  1. Real-Time

Everything happens in real-time as the need to create ETLs every time is not needed. Thus, Looker allows you to tap into your raw data directly.

  1. Cloud-based

Looker is totally browser-based and 100% on the cloud. There are a lot of perks of this including the elimination of the need to manage a desktop software, while facilitating easy deployment.

  1. User-Friendly

Looker is often termed as a user-friendly and curative platform since it is easy to use, has various helper tools, and boasts various no-code features.

  1. Multi-DB Support

It is possible to use Looker on a plethora of underlying SQL Servers such as AWS, Microsoft SQL server, BigQuery, etc. Hence, it provides support to a wide range of SQL languages.

You May Also Read- Power BI Tutorial For Beginners

Looker Architecture

Looker architecture is made up of a Linux server with the below-mentioned components.

Looker Tutorial
  1. Looker's Application Layers

The first layer in the architecture is the Application Layer, which facilitates the users to interact with this application. The Application Layer also enables and manages the interactions that take place between the users and the various other layers.

  1. Looker's AI Layers

Next comes the AI Layer. A secure HTTPS connection is used to facilitate communication between the Looker API and the Application Layer.

  1. Looker's Data Access Layer

The Data Access Layer is the third layer, which acts as a host to the data source that is connected to the Looker app. Multiple data access layers such as NoSQL DBs and SQL dialects are used by Looker for providing efficient analytics.

  1. LookML Model Layer

LookML Model Layer is the next in line. LookML is the syntax used by Looker for modeling the data inside, which ultimately aids in creating a rough representation of the data structures.

  1. Looker's Persistence Layers

If you are wondering where all the connections, user data, and session data is stored, then this fifth layer is the answer. The Persistence Layer comprises two DBs, namely primary and replica.

Why Learn Looker?

Here are a few reasons that will give you a push towards learning Looker.

  • Create, structure, and manage your ETL queries in an easy and professional manner
  • Get complete access to your entire set of raw data since nothing is lost in the ETL layers
  • Creating dashboards and reports for effective visualizations has never been easier
  • Common variables are easily standardizable throughout the organization due to LookML
  • Over 2,000 top-tier data-driven companies are using Looker. Thus, you will be increasing your chances of getting hired
  • Drive better and smarter outcomes via better access to data

Looker Career Opportunities

Before you set out to learn Looker, it is very important to know what career opportunities open up after you complete your Looker certification training. Here are a few of the top job titles you can go for -

  • Looker Developer
  • Data Engineer
  • Looker Analyst
  • Sales Engineer
  • Business Intelligence Consultant


Whether you wish to better your chances of succeeding in your current organization or you wish to switch to a better company, the right Looker training and Looker tutorial can do wonders for you.

With Looker, organizations get flexibility as needed while also getting the feature of scalability to. Both these aspects come together to provide a 360-degree support to organizations across the globe and working in almost all industries.

Looker Tutorial FAQs (Frequently Asked Questions)

Q. Is Looker certification worth it?

Earning a Looker certification will help you showcase your proficiency in the field, along with your aptitude and skills.

Q. Is Looker easy to learn?

Looker uses LookML, its own dependency language, which is built around SQL. Thus, anyone who has prior SQL experience will be able to get started on easily.

Q. Is Looker Studio free or paid?

There is no charge for Looker Studio self-service BI. However, it charges $9 per user for every project every month for Looker Studio Pro.

Q. Is Looker an ETL tool?

Ans. No, Looker is not an ETL (Extract, Transform, Load) tool in itself. Rather, it is a data analytics and BI platform.

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