You can create one query that gets the information you need for your combo boxes and then set that query as the row source for combo/list boxes on multiple forms

But in the Video tutorial, I have to specify the form in the criteria field of the query, so that won't work, unless I do a query for each form and put that form in the criteria.

You don't need to specify each individual Form and certainly don't need a bunch of different Queries that do the same thing.
Use this syntax.
   [Screen].[ActiveForm]![StateCombo]

Later, with VBA, you won't even need the Queries.

Isnt [ActiveForm] only for 1 form? That is where I insert the form name, correct? Or can I just put "ActiveForm" in its place?

I've Built Queries for multiple forms to accomplish this, cascading cities,
1 I am having an issue with everything works as it should. The cities show when I click the dropdown box, they requery when I change states, but when I click on a city, it doesn't select the city, it just dings at me like a Windows error.

But only one 1 form, the others that I have done so far are working fine.

Any Suggestions?
Thanks

I have the cascading combo boxes, it works great as a form, but when I use the form as a subform, is there a way for me to do it in the main form when I use it as a subform?