This video gives a general overview of the Writing Center at Frankfurt International School mission what assignments the tutors work with, how to make an appointment with the Writing Center, and what resources the Writing Center offers.
Long introduction to the speaker (you could fast forward to about 12 minutes). Outlines different perspectives on grammar, with links to models of learning/acquisition. Could be useful for tutor-training: traditional focus on prescriptive grammar balanced by context/texture, collocation and emergent phenomenon; some practical ideas could be used by tutors.
Another resource on plagiarism from Indiana University. Offers a quiz with immediate feedback on plagiarism, plus suggestions for how to recognize plagiarism.