I'm a CELTA-certified English teacher (American in Berlin) offering group and one on sessions.
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Skype one-on-ones also possible.
I've worked with business people and those prepping for Abitur.
Here's my website to learn more about me: www.typingtigers.com
My German is B2 level, which allows me to explain many things auf Englisch. Ich freue mich darauf.