Hello,
Here is a list of resources that can help you for sure.
https://ladderlogicworld.com/ladder-logic-basics/#:~:text=When%20implementing%20a%20ladder%20logic,essential%20and%20others%20are%20optional.
https://www.plcacademy.com/ladder-logic-tutorial/
https://instrumentationtools.blogspot.com/2019/03/plc-study-material.html?m=0 (I prefer this)
Bonus content: Video lectures: https://instrumentationtools.blogspot.com/2019/03/plc-study-material.html?m=0
All the best for your exams. Stay healthy and stay safe.
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