That video is way to complex for someone who has no concept of queries. I'm sure there are many that are simpler but here are some basic directions.
@EJohns When you are new to SQL, the easiest way to build a query is to use the QBE (Query By Example) tool.
Click on The Create tab
Then QueryDesign
The default query type will be Select. Choose each table and add it to the grid.
If you have defined relationships using the Relationship window, Access will automatically draw the join lines to connect each table. Otherwise, you will need to draw the join lines.
Here is a picture of a query from my tax database because that is what I am doing today. It only has three tables but it should be simple enough for you to follow and it is the same kind of query you need
View attachment 113687
To draw the join lines, click on the column in the left table. Hold and draw a line to the matching field on the table to the right. If the names match, Access will fill them in. If they don't, you will need to fill them in using the dialog. Draw lines to each related table. The last two tables will not join to each other but will both join to the table to the left of the next to last table.
Press the big sigma button to create the totals query. Access adds "Group By" to the "Total" line for each column. Chang them as necessary. As you can see, I have Sum, Count, and Where as well as two group by's.