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Learn from the founder

Lessons earned through experience. Shared with everyone.

A free, growing collection of lessons from Eric Joseph Tolo, founder of ERT‑CDE Holdings Inc., on building businesses, leading people, and growing through challenges.

Preview. The lessons below are samples that show the layout. Lessons written by Eric Joseph Tolo will appear here after review.

Featured lessons

Start here

Starting a BusinessSample

Sample lesson title for Starting a Business

This is a placeholder summary. It shows how a one- or two-sentence introduction to the lesson will appear.

1 min read

Growing a BusinessSample

Sample lesson title for Growing a Business

1 min read

Leadership & PeopleSample

Sample lesson title for Leadership & People

1 min read

Learning series

Lessons to read in order

Coming soon

Second sample series title

Placeholder for a future series. It shows how a series appears before its lessons are published.

All lessons

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Starting a BusinessSample

Sample lesson title for Starting a Business

This is a placeholder summary. It shows how a one- or two-sentence introduction to the lesson will appear.

1 min read

Growing a BusinessSample

Sample lesson title for Growing a Business

This is a placeholder summary. It shows how a one- or two-sentence introduction to the lesson will appear.

1 min read

Leadership & PeopleSample

Sample lesson title for Leadership & People

This is a placeholder summary. It shows how a one- or two-sentence introduction to the lesson will appear.

1 min read

Values & CharacterSample

Sample lesson title for Values & Character

This is a placeholder summary. It shows how a one- or two-sentence introduction to the lesson will appear.

1 min read

Challenges & FailuresSample

Sample lesson title for Challenges & Failures

This is a placeholder summary. It shows how a one- or two-sentence introduction to the lesson will appear.

1 min read

Life & Personal GrowthSample

Sample lesson title for Life & Personal Growth

This is a placeholder summary. It shows how a one- or two-sentence introduction to the lesson will appear.

1 min read

Starting a BusinessSample

Sample lesson title for Starting a Business

This is a placeholder summary. It shows how a one- or two-sentence introduction to the lesson will appear.

1 min read

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