I'm sorry but i don't understand is a fork of eth? Or a whole new altcoin? What exchange is it on anyway? Is it easier to mine than eth?

What's the difference between ETH and ETHW?
Is it a fork?
And will there be two currencies after the Merge will take place?

It is a fork that not yet has happened. (ETHW will fork around 15 september)

Ethereum POW and ETHW is the same thing.
The sourcecode has removed the difficulty bomb, removed POS code, removed some of the stablecoin adresses/ tornado cash adresses/ and hacked accounts. Implemented replay protection to make sure the new blockchain can co-exist with the original Ethereum.
The work is stil in process, and more will be added.

If you have ethereum on any of the supported exchanges at the forking date, you will receive the same amount of ETHW(Eth POW) as ETH. Ethereum owners who have locked their funds in the staking pool will not receive coins in the new POW fork. This meens that the Ethereum POW will have 15-20% less coins than the original Ethereum.

Twitter:
https://mobile.twitter.com/ethereumpow
Sourcecode Github:
https://github.com/ethereumpow/

Supported Exchanges (25.08.2022)

Poloniex: https://poloniex.com/spot/ETHW_USDT
Gate: https://www.gate.io/ru/trade/ethw_usdt
Mexc: https://www.mexc.com/exchange/ETHW_USDT
Phemex: https://phemex.com/spot/trade/ETHWUSDT
Bitrue: https://www.bitrue.com/trade/ethw_usdt
Digifinex: https://www.digifinex.com/en-ww/trade/USDT/ETHW
CoinW: https://www.coinw.com/front/fastTrading?symbol=1027
Bitfinex: https://trading.bitfinex.com/t/ETHW:USD

When buying ETHW futures you will receive the same amount ETH POW after the fork on the 15th of september.