I downloaded from Flightsim a scenery package (Portland Bidges). The unzipped folder structure is per the enclosed screen shot.
What do I do to install it & make it active in MSFS? This is my first time doing this, so please be specific, detailed & patient! Thanks.

You should just be able to place the unzipped main folder (containing all the others) into the community folder and start the sim, as far as i know, any add-ons must be in the community folder before the sim is started.
Third party scenery belongs in #third-party-addon-discussion:scenery-packs
Where would I find a Community folder?
