Anna, unfortunately, tagging and titling is just a necessary, time-consuming bit of housekeeping that needs to be done. I don't bother with tags, just make sure the name of the element is appropriate so I can search in Bridge or the Finder for that word in the file name. For example, for ADSR we had to use a chipmunk, so I was relying on having either a designer's appropriate name for the file, or my own housekeeping having given that name. I found only one in my stash, which is huge, so I was glad for not having to extract one.
Many designers are really nice to have appropriately named their files (or tagged them) so we can search and find. Many others only give the file names something like "element 1...2...3..." etc. A major hassle to have to rename all the elements in a kit, but if you do it when you unzip and put the kit away, you will always be able to find what you want.
I use generic names like flower, leaf, tree, ribbon, bow, etc. then do the search in Bridge when you're in a folder and you will search all files in that folder and subfolders. So, I can find all the flowers in all the kits (that I have) by all the designers at GDS, by having the GDS main folder open when I do the search. That's for my system, as I sort first by store, then by designer, then in folders for each kit, with separate folders for papers and elements. Other people use other systems.
It's great you're getting to learn how to do things that suit your organization system right off the bat. It will certainly help you learn your new computer's way of doing things!