To find it, you'll need to:
1. Consult your owner's manual: This is the best resource. It will have a diagram showing the location.
2. Look near the engine: It's usually a somewhat rectangular or cylindrical black plastic box with a large intake tube leading to it.
3. Use online resources: Search for "[your year] Chevy S-10 air filter location" on YouTube or a car parts website. There are likely videos or images showing the exact location for your specific model year.
Without knowing the year of your Chevy S-10, I can't provide a more precise location.