Which Language is Easier: Polish vs. Russian [An Overview]

What other languages can help to understand Polish better? I think Russian but what about German? Also what are the most important foreign languages in Poland?

Language Learning : Russian, Eurasian and Polish Studies : UMass Amherst

Polish: Learn Polish for Beginners: A Simple Guide that Will Help You on Your Language Learning Journey: Learning, Simple Language: 9781950924790: : Books

Which language should I learn first, Polish or Russian? - Quora

Are Polish and Czech Similar or really Different?

Czech, Polish, Slovak - Are These West Slavic Languages Pretty Much the Same?

syntax - Why do Polish and Belarusian have an atypical greeting if compared to other Slavic languages? - Linguistics Stack Exchange

CEEOL - Article Detail

Which Language is Easier: Polish vs. Russian [An Overview]

Wiktionary