This is how you install add-ons for the ultimate idiot.
1. Click the download link (these links are blue and usually start with www.)
2. A window is going to pop up. Click save (under open).
-(2.5) If it automaticly opens WinRAR or any other program close it.
3. You should know where your computer saves files to. Go to it (mines Desktop)
4. Click the add-on once (so it hilights it.) Then press CTRL-X.
5. Now click my computer.
6. Now click C:.
7. Now click Program files.
8. Now click Blockland.
9. Now click Add-Ons.
10. Now press CTRL- V
11. Now go into Blockland.
12. Press 'Start A Game'
13. There is a button that says Add-ons. Click it and check the addon you installed