Do you mean "Where are the weekly specials?" or "What do you mean by any 2 points?"?

On the main amtrak.com page, click on the "Hot Deals" link on the top (middle). Then click on the "Weekly Specials" link in the middle of the page.

You will see a list of all the weekly specials offered for that week. But remember, they are for coach only, and they only offer a certain amount of seats (IIRC - 8 seats) at that price! But the fares can be 60 - 90% off!

Even though the list states "departing - Seattle" and "arriving - Chicago", you can choose any 2 stops listed! Example is you could choose Spokane to Minneapolis or Havre to La Crosse! If it's listed, you can choose it.

Although it's not listed this week, the weekly specials are (as the name implies) updated weekly! But just because it is listed one week doesn't mean it will show next week. And there's no guarantee that it will be listed either. But if it is - grab it! Many years ago, I found a weekly special from Albany, NY to Chicago for $19.50! And (almost) currently, I've seen New York City to Chicago listed for $44!

As mentioned, I would check for a AAA fare, but don't pick up your tickets. If the tickets have not been printed, there is no penalty to cancel.