A great platform to learn SQL from beginner to intermediate level for free.

Pros

• The lessons are free and encourages only donation to sustain the project.
• Quite an extensive list of lessons to choose from depending on level of understanding of SQL.
• Frequent use of exercises to put the theories learned to application.

Cons

• The platform uses their own web application to execute queries for the exercises. I will be good to add lessons related to applications learners can use to do their queries ie. How to do SQL Queries in Microsoft Excel/Power BI.
• The team may also opt to have some paid contents where access is available for minimal fee. That way the project may be sustained to include advance level lessons.