Essences and Fossils:

Essences: Provide guaranteed affixes for crafting Rare items.
Fossils: Modify items during crafting to alter their properties, offering unique crafting options.
Bench Crafting:

Crafting Bench: Located in your hideout, this allows you to add specific mods to items using various currencies.
Trading and Managing Items
Effective item management and trading are vital for success in PoE.

Inventory Management:

Stash Tabs: Use these to organize your items. Premium Stash Tabs offer enhanced sorting and trading capabilities.
Sorting and Filtering: Utilize in-game filters to manage items based on rarity, type, or attributes.
Trading:

In-Game Trade: Use the trade interface to buy or sell items with other players. Ensure you check item prices and attributes for a fair deal.
External Trading Websites: Platforms like Poe.trade can help you find specific items or check market values.

If you want to explore more about the game, additional details can be found at this link:(https://www.mmoexp.com/Path-of-exile/Currency.html)