look up a "how to" topic (such as how to play blackjack, how to files your taxes, how to perform CPR) at library or online. what kinds of sources do you find? which ones do you find the most helpful and credible and why?

When researching how to do things, online search results bring up sources such as (Red play button logo video player) and wiki. I find red to be most helpful and credible as it visually explains the steps with demonstration as well as talking the viewer through it. Wiki mostly provides just photos of the steps and words rather than all that red brings.  Red's credibility comes from the fact that its videos show the situation in action and functioning.

probably 3 since archeologists and historians don’t understand there writing.