Where do I find the official maps from RA2/yuri and what do I need to extract them?

---

http://greenerpasture.com/ra2beyond/officialmaps.asp 

You just extract contents of the .zip file to the folder in which you have RA2 installed.

---

So there isn't a way to extract the maps from the game itself like how you can in generals?

---

Oh, I thought you were referring to the additional official maps that were released after the game.

http://xhp.xwis.net/  ) to open the RA2 .MIX files (analogous to Generals .BIG files).

---