How to exchange USO for ETH via web wallet?
1. Open https://wallet.usoamic.io:
https://usoamic.io/img/screenshots/usoamic-swap-to-eth-1.png
 
2. Click "Add" if you want to add an existing wallet or "Create" if you want to create a new one:
2.1. Сhoose the second option and click "Create":
https://usoamic.io/img/screenshots/usoamic-swap-to-eth-2.png
 
2.2. Сlick "Next" and fill in the fields:
https://usoamic.io/img/screenshots/usoamic-swap-to-eth-3.png
 
3. Еransfer ETH and USO to the wallet (for example, from swap platform) and wait for their receipt to the account:
https://usoamic.io/img/screenshots/usoamic-swap-to-eth-4.png
 
4. Go to the "Exchange" tab and fill in the fields:
https://usoamic.io/img/screenshots/usoamic-swap-to-eth-5.png
 
5. Click on the "Exchange" button and wait for a window with a tx id.
 
6. Look at the status of the transaction at EtherScan.
https://usoamic.io/img/screenshots/usoamic-swap-to-eth-6.png
 
7. Congratulations, you have exchanged your USOs for ETH.