I've just created a couple of build order practice maps.
It are currently eight maps consisting of:
Alternative 1.3
New Bloody Ridge 2.1
Neo Aztec 2.1
Dante's Peak SE2.0
Empire of the Sun 2.0
Fighting Spirit 1.3
La Mancha 1.1
Neo Beltway 2.0
You can pick your starting location before the game (the force name tells you which slot has which starting position by it's o'clock position), aswell as picking your race.
In the game you start the normal way, selected race, 50minerals, just if you play with others (not tested yet) you do not play against each other (for that just play the normal maps.. get the latest versions from the KeSPA website's map section: KeSPA maplist ) but you simply practice your build order to get it right.
Simply for warm up, not wanting to work on your build order on ladder and not having friends to play with online.
Somewhere on the map (mostly close to the middle of the map) is always an invincible zergling which you can use to practice your scouting multitasking, since having one probe/scv/drone less at your minerals makes a difference afterall and you would scout in a real game.
There is a timer on top, starting at 20:00 (since counting up is not very accurate if you fix it with triggers to do so) so you can see if you improve your timing for the push out or whatever.
If you find any bugs let me know, also if you want another map added to it, I might add it.
Download the .rar file:
http://dl.dropbox.com/u/15287110/BuildOrderPracticeMaps.rar
http://ooalml.webs.com/files/BuildOrderPracticeMaps.rar
Download the .zip file (for non-windows users):
http://dl.dropbox.com/u/15287110/BuildOrderPracticeMaps.zip