Police Cadet Smith

So you Downloaded the mod(s) and they are in a zip folder?  First they will be in a zip folder or .rar file.  Windows can open zip folders but I think if the files are big windows can't unzip the whole file.  I had that problem.  Windows can't extract .rar files and some mods come as an .rar file type.  I personally installed 7-Zip.  It is free and you will need it to extract the .rar files so you can install them in game.  7-Zip also extracts (unzips) the zip folders so i just use this program to extract zip and .rar folders.  Once unzipped, it will produce a folder that you can open and install the files.  Read the read me that is in the folder to know where the files go.

You don't. You're a n00b forever

There is no progression or rank system in LSPDFR, so you cannot get promoted automatically. You could change your uniform if you feel like promoting yourself, though.

I was joking! Welcome to the community man