Stained some wood, should I put on clear coat?
Stain is not meant to be the finish- just the color. It has no protective qualities.
Lots of good choices in finishes- think about sheen level- Satin is the most used, but it could be either flatter to retain the raw look, or shiner.
Varathane makes a good oil poly, if you want to go waterborne I know of no better to use than Zar Ultra Max- tough enough for floors. Ace Hdwe, among others carries it.
"It's better to come here with questions before you screw up than to come here after and ask how to fix them."- JS