Q1. What would you do in my position?
A1. I would pay them to fix it.
Q2. ...is the burr grinder the next step?
A2. Absolutely, most agree the grinder is at least as important as the espresso machine.
Q3. Does anyone used canned ground coffee?
A3. I wouldn't because preground coffee = stale coffee. Search 'preground' in the
FAQs and Favorites Digest for more.
Q4. ...is there somewhere I can go to learn how to use it?
A4. There are several threads that discuss how to use the Cremina (see the
search results, especially the last couple pages).