Had Truck for 4 days, already won't start

[Melnickta]

Bought the 70 Chevy Shortbed Stepside on Friday afternoon, went today to drive it to court and...nothing. No clicks or anything. Simply silence. Had to take my daily driver.

After court (as a lawyer, not a defendant) I went back to try to jump it off. Still silence.

I guess my next course of action is to try to wire brush the mess out of it and tighten it back on the battery. May try charging the battery as well.

THe only other thing I know to try is to check the connection to the starter.

Any other thoughts? I know it could probably be a million things, but I'm looking for the most obvious.