Filtering Down Table Info

I have a table that lists all of my available seating for different events.

My table columns look like this:
EventID - Section - Row - Seat - Available

Sample data in columns:
1 - A - A - 1 - Y
1 - A - A - 2 - Y
1 - B - A - 1 - N
1 - B - A - 2 - Y
2 - A - A - 1 - Y
2 - A - A - 2 - Y
2 - B - A - 1 - Y
2 - B - A - 2 - Y

EventID actually goes from 1-6
Section actually goes from A-F
Row actually goes from A-J
Seat actually goes from 1-36

When the user selects an event (or events) in the first box - I would like the query to eliminate the available seating, from the other events, in the results.

When the user selects a section (or sections) - I would like the query to further eliminate the available seating, from sections not chosen, in the results.

When the user selects a row (or rows) - I would like the query to further eliminate the available seating, from rows not chosen, in the results. And finally display whatever available seating is available - based on all three of the above criteria.

I purchased every access book I could find.. and I am slowly learning this. I'm a complete novice..
I'm not looking for any of you to do the work for me.. I'm more looking for guidence. I'm still getting to know all of the controls and their limitations. I have not yet written any VBA code. (It's still very confusing) I'm trying to get by on using the toolbox controls, using queries, macros and form controls.