1. You did not need the "map pack" from wfamaps. I've removed the link from the site as it was a bit out dated. The map packs were for a specific server that was running a custom set of maps. (as was noted on those pages)
2. There is a good reason for sometimes naming the .pk3 different then then the .zip. Maps that only have minor bug fixes, normally keep the same pk3 name. So that it overwrites the players old copy of the map. While the .zip changes to reflect version numbers. Maps that undergo major reconstruction (like element for example) will tend to change the pk3 name as well.
3. This is not rocket science, but if you could not figure this stuff out, perhapes you should have asked for help or an explanation. Instead of calling people names like a 10 year old.