Poe Currency is not a fixed currency in the game, but a general term for all currencies that can be traded with each other in Path of Exile around a large amount of items, scrolls and orbs, such as Exalted Orb and Chaos Orb, which are undoubtedly played an important role in the game. In general, we can use Poe Currency to enhance our character skills and buy some other more needed items, for the exiles, how to get enough Poe Currency throughout the adventure has become the key to success.
First of all, you need to collect as much as Poe Currency possible, which can be obtained by dropping from the killed monsters. However, not everything you collect is what you really need, so you can leave those advanced orbs to improve your character skills and clean up the ones which will never be used by selling them to others.
Or, you exchange directly other items with other players, which is pretty good without costing any extra currency, although some rare orbs are still hard to obtain. So you should always focus on the market dynamics and price to ensure not jumping into a loss.
In order to free up more time to enjoy other content in the game, it may be more convenient to Buy Chaos Orb and equipment,and just Poecurrency.com is supplying cheap Poe Currency and items with 5% off by using "POE" and 8% discount code, which is a website that focuses on Poe and they can put all energy into Poe service.