Verb conjugation of "preside" in English

I will be visiting in Italy from April 10 to 15 in order to meet some old friends. I'd like you to attend a one-day course, maybe I can help you in learning something new. Please give it a try.
In the attachment you will find the reviewed documents. Your Portuguese is quite good. I understood everything. If you write the same text in German, I can know what you wanted to say.
I once had a lesson with a private teacher, but unfortunately she could not come regularly. She was always sick, then I have visited a school in Andalusia, which was worthless, since we talked only German.