There are many free product management training resources available online. Here are a few examples:

1. Google Ventures Design Sprint: This is a free, 5-day workshop that teaches product managers and teams how to prototype and test new ideas in a rapid and iterative way.
2. Product Management 101 by Mind the Product: This free course covers the fundamentals of product management, including product discovery, roadmapping, and user testing.
3. The Ultimate Guide to Product Management by Product School: This free course covers the basics of product management, including market research, product strategy, user experience, and product marketing.
4. The Product Management Toolkit by 280 Group: This free resource includes templates, guides, and checklists for product managers, covering topics such as product roadmapping, prioritization, and stakeholder management.
5. Product Manager HQ: This website offers a variety of free resources for product managers, including articles, podcasts, and templates.
6. The Lean Product Playbook by Dan Olsen: This free resource offers a step-by-step guide to building successful products using the Lean Startup methodology.

When using free resources for product management training, it’s important to make sure the information is accurate and up-to-date. Be sure to check the credentials of the source, read reviews and ratings, and validate the information before using it to guide your product management decisions.

Please contact us to help you with the right resources for your learning at galago.consulting@gmail.com