This question gets a bit tricky to answer... Starting from scratch, if you buy just vanilla WoW, you can experience the original world as it has been destroyed by the Cataclysm expansion. You can level up to level 60, but cannot access professions, areas, races, or other such things from any of the other expansions.
In order to access Outland, jewelcrafting profession, and Draenei? / Blood Elf races and starting areas, and level 61-70, you will need vanilla WoW + the Burning Crusade expansion.
In order to access Northrend, Inscription profession, and Death Knight class, and level 71-80, you will need vanilla Wow, Burning Crusade expansion, and Wrath of the Lich King expansion. Oh, and a prior level 55+ character on your account to play as a Death Knight.
In order to access the misc Cataclysm level 80+ areas, Archeology secondary profession, Worgen / Goblin races, and level 81-85, you will need vanilla WoW, Burning Crusade expanion, Wrath of the Lich King expansion, and the Cataclysm expansion.
Those are the restrictions. You can play on whatever realm you want with whoever you wish. You just may not be able to reach all the areas they can.
You can trial every bit of it with the 10 day trial, though I don't quite know how they treat it when your time is up.
Great question :)
I wondered it myself and googled it before trying, so here is a good discussion on the issue;
http://tobolds.blogspot.com/2007/01/how-big-is-azeroth.html
And a mentionable and scientific! approach in a comment :)
Mages can use "blink" to jump forward 20 yards. So, I blinked forward five times, ran back and measured the distance a few times.
Averaging it out, you run 100 yards in 14.15 seconds.
100yards / 14.15 seconds = 7.067 yards/sec
Three yards to a foot, means 21.201 feet/sec.
Which works out to 14.46 MPH.
Meaning, in 18 minutes 35 second you actually ran 4.48 Miles.
So, lastly, 4.48 miles / 3.7 * (6.4 miles on each side [The square root of 41 square miles]) = 7.75 Miles on one side.
7.75² = Kalimdor is closer to 60.1 Square Miles
For ref: Manhattan is 20 square miles
read all the comments, they made quite a discussion on the issue..
Best Answer
Tricky, but possible.
The FPS display is no normal UI element. It's a simple Label ("FPS") and Text (the number as a String). That's probably why you have issues with its positioning (and some addons may not find it).
So...
Use the MoveAnything addon. Look for Framerate and you should be able to move it around. It used to work, but I can't confirm it for BfA.
Use a macro to toggle it and move it to a specific position:
Code:
X and Y are the coordinates relatively to the center of your screen. Negative values go left/down and the positive ones up/right: