No, Foundations are open to everyone, irrespective of you being a GrowthX member.

Yes, you will always have access to the Foundation for. However, Foundations may or may not always be available to everyone.

Foundations are completely self-paced. Based on the Foundation itself, it may take you anywhere between just a couple of hours to 4-5 hours to complete a Foundation.

Foundations are built for anyone who is solving problem statements across distribution, product, strategy, and leadership for internet-first companies. Specific Foundations may only be relevant to specific functions. More on if a Foundation is for you on the detail page of each Foundation.