Dear Sulasailor, thank you for your kind offer! Learning not only the vocabulary of a foreign language but also phrases, colloquialisms, idioms and sayings in order to understand their respective meanings, nuances and undertones, or even to use them actively would be a really good thing! I am more than willing to learn and you are very welcome to correct me or point out possible improvements. However, this would be more practical for documents that are already published, condoning the trade-off of having to modify them after publishing them. Thank you!