Filtering out a table based on the stacked bar graph selection

You need to connect the two table together in Model view (third icon down on left, shows you the two tables next to each other. Then drag one field where the values are found in both tables from one to the other - they should now appear connected).

When you create the visualisation in Report view this should then work automatically.
If it doesn't click on the bar chart, select "Format/Edit interactions" and then on your raw table click on the icon that's a chart with a small filter in front of it.

Matt