I'm interested in offering my knowledge of the English language in return for someone to assist with my Russian. In addition to English, I also speak and write a little German. It has been a long time since I have used it significantly, however.
Born and raised in America, I know American English very well. I am familiar with both technically correct English and social English.
I have an education in Physics and mechanics, so I am fully versed in technical English, as far as units, concepts, terms and common equations. I program, so I am also familiar with terms, concepts and usages in the computer science world. I have read over three hundred books in my life, and have an extensive vocabulary.
If you have a question about anything in English, please don't hesitate to ask me. If you can not ask the question in English, I have access to people who can translate Spanish, Vietnamese, German, Russian, Ukrainian, Portuguese, Thai, Tamil, and Arabic.