Starcraft Terran Questions?

[dogtownbootleggers]

I was wondering how Terrans can detect lurkers form Zergs and what the proper building process is when you start the game because I seem to always be very disorganized and have the lowest score in my games.
Also, what is the best defense formation against rushes

[Mom22]

Wow it has been a long, long time since I've played but I believe that the towers and science vessle are both detectors. Now as far as a building order you have to just mess around with it. My best tip is to use hot keys and learn to use them well.

http://www.replayers.com/

I think you can watch starcraft replays on this site, also if you play on battlenet just save every game you play and go back and watch each one of them and find out how other people are building.