Reply To: Auto align tops of various length paragraphs across text boxes

Try using the tools on the alignment panel.

Window >Object & Layout > Align

This should have an option that will solve your problem.

If you want to learn about some of the other tools in InDesign, consider attending this InDesign webinar I am hosting, which shows how to create a newsletter. I know it's not exactly what you are making, but the tutorial might be helpful to you: https://bit.ly/elNXbs