I can sell you my “College Yiddish” by Weinreich; If you Binyamin2711 are poor, I could even give it away to you as I need to clear clutter at my residence, and after what Rav Reisman said this morning about the Steipler receiving a Sefer for free, it is the right thing to do.
You could also pay a visit to the Yiddish Book center Museum in Amherst Massachusetts.