I'm pretty sure we are learning alien sign language from the planet nesxifthainau
No no no no its alien language from planet German ...near Poland and France XD
It's like the difference between "learn" and "learns" in English - they mean the same thing but you have to match them to different grammatical situations: "I learn" but "he learns".
In German you have different forms for:
"I learn" = ich lerne
"you learn" = du lernst
"you (more than one person) learn" = ihr lernt
"he/she/it learns" = er/sie/es lernt
"we/they learn" = wir/sie lernen
Yes, in this example the form is the same for the 3rd and 4th options, but that doesn't always happen. Learning all these forms for one verb is called its conjugation and you can find it on several helpful websites like www.verbix.com.