How can I buy shares of oil? I'm told it's done through ETFs. How's that related to oil prices per barrel?
While we're not supposed to make direct recommendations, and I am in no way advising anything, USO an ETF that buys light sweet crude oil futures with the intention of mirroring the price movements of oil.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How can I buy shares of oil? I'm told it's done through ETFs. How's that related to oil prices per barrel?

### Response:
While we're not supposed to make direct recommendations, and I am in no way advising anything, USO an ETF that buys light sweet crude oil futures with the intention of mirroring the price movements of oil.