If you make a post on craigslist, and choose to sell an item, you will first be asked for an item category. At the top of this form (mobile browser or not), it clearly states:

Avoid scams. Deal locally and meet in person. Beware shipping, wire transfers, cashier checks. Learn more.

The avoid scams link appears on nearly every page. This is actually a good page for avoiding certain on-line scams and not just for craigslist. It isn't really a FAQ, but is largely ELI5 and offers some examples. The most interesting thing I find about that page and the people who seem to skip it is that, at the top of the form you must fill out to sell your item, it sums up the page as clearly as can be.

And yet a common post in /r/scams involves doubt about distant buyers who email about the item and shipping, checks, Western Union, and so on. A less common but still much too common post if from people who are asking for advice after falling for one of these scams. The fact is: people profit by stealing money and even identities of victims via common scams, and craigslist clearly explains the one rule to avoid those scams. Most of these scams succeed because someone did not read the ELI5 advice offered to them or simply ignored it.

Asking questions is part of learning. But it seems to me that the person who begins by clicking "start by checking our FAQ" rather than posting, "Where do I start" has a big advantage on the whole learning process. This habit of looking and reading before posting not only helps with learning the piano, it could save your your bank account one day.