After looking at so many maps/add-ons, most were spammed with, "i keep getting invalid packet 12, what is wrong?". And "Idk how to extract, can someone help". And "When I hit the button, all I get is a notepad". Well hopefully new dlers will look at this.
WinRAR (WinZIP)
Step 1
Open it with WinRAR (WinZIP, whatever) and when its done...
Step 2
First click the file and then hit Extra to...
Step 3
Then look for C:Drive (or idk if its different but it does have C:) and then look for program files, open that and look for blockland, then when you find blockland, click on it (Dont open it), then hit OK.
Step 4
Play with your new map/add-on :D
.cs files
Step 1
The mistake made in this is, you need to click save, click save and you should see a thing pop up
Step 2
It is the same procedure as the others, find the C: and open it, then open program files.
Step 3
Find the blockland folder and save it there (I haven't dled a .cs file in a while so I think you open the bl folder and then look for the blockland that was just opened) then click save.
Step 4
Have fun with your Add-On.