How to study to understand and apply RPA?

From last month, I started studying RPA that can be used for work using UiPath. [link removed by moderator]

I have never studied VBA, and Excel is also a person who can enter data in a table.

I'm studying to automate websites and Excel using UiPath.

We are testing whether it can be actually automated based on the example given in reference to the book "UiPath Business Automation Strongest Recipe".

However, I'm not sure about the details of UiPath's tools, and I have no idea which activity to use for application.

Should I buy and
understand another book that gives a list of UiPath tool activities like a dictionary ? Or, if you have a reference site, please let me know.

What I want to do in the end is to be able to transfer the data posted on the website to EXCEL.

How do I build it to understand it myself and build it with UiPath?
I'm sorry for the naive question, but please teach me. I look forward to working with you.