Hi Adeyosola, 
Welcome to our forum!
Since you’re new to Test Automation, one of the most helpful resources/sites that you can utilize is the Katalon Academy, on which we offer free, expert-led courses on to help beginners like yourself get started and get proficient with Katalon and automation in general. Check it out below:
Plus, you can also take advantage of the Katalon Certifications program while studying to not only test what you’ve learned, but also to gain job-ready skills and boost your careers!
For questions relating to Katalon Academy & Katalon Certifications, feel free to create a thread in Katalon Academy
Last but not least, don’t hesitate to Ask the Community if you have any questions. 
We look forward to seeing you around!
Albert