Verb conjugation of "contribute" 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.
The snow can be compared with white veil. Here in Davos, there is lots of new snow, so fresh and powdery snow, which is great for skiing. One needs to be careful from unexpected avalanches.
I need to learn a lot of Spanish because I want to study at the university of Madrid. In Switzerland, I studied law, but after 2 years I have switched to medicine: to help people, rather than you know....