"Learn online business" is a big item for a to-do list. It doesn't tell you what to do when you sit down.
Think about a skill you already use, then choose one unfamiliar part to learn. Make the task small enough for one learning session:
Broad goal: Understand email marketing.
Small task: Learn what an email list is and write one sentence explaining it in my own words.
Or:
Broad goal: Get comfortable with a new tool.
Small task: Find out how to create and save one practice file.
Choose a task with a clear finish, so you know when you've done it.
Rewrite your learning goal as one specific task in the comments.