How to prepare yourself for the collapse of the US dollar?

As a concerned investor, I'm increasingly wary of the potential risks associated with the US dollar's dominance in the global financial system. Given the current economic uncertainties and the rise of alternative currencies, how should one prepare themselves for the potential collapse of the US dollar? What steps should be taken to diversify portfolios and hedge against such a scenario? Are there any specific cryptocurrencies or financial instruments that offer protection in such a situation? Additionally, how can one stay informed about the latest developments and trends in the cryptocurrency and finance world to make informed decisions?