Starcraft – How to open Starcraft using custom .mpq files, in windowed mode

There are so many different build orders to use against each race it's ridiculous. Also consider that good players will be able to shift their build to better react to their opponents.

That being said, I think the most common one is some variation of a 9 pool build.

* 9 - Spawning Pool
* 8 - Drone
* 9 - Extractor
* 8 - Drone
* 9 - Cancel Extractor
* 10 - Overlord
* @100% Spawning Pool - 6 Zerglings 

I should warn you that I am no SC expert player, or anything. I get most of my info from http://wiki.teamliquid.net/starcraft/Strategy_%28Zerg%29

Knowing build orders, knowing when to use a build order and knowing when to change your build order on the fly are all very complicated questions with very complicated answers. If I were you, though, I would start with the 9 pool. Learn it's advantages and weaknesses over other builds. Also you should think about what the build is capable of, what you are able to tech into from this build and etc.

Before SC2, you had to tell each worker to begin mining manually. Simply setting a rally point on a mineral patch did not get the job done. Basically, you get used to setting a rally point in an area right next to the town hall building where workers aren't constantly pathing back and forth. That way, when the worker is done, you can go select it quickly and have it start mining. There was no 'idle worker' button in SC1, unfortunately, so that shortcut won't work.

As for workers per patch, it's roughly the same as SC2: You get diminishing returns when you go from 2 workers per patch to 3 workers per patch, and using more than 3 workers per patch is not worth it.

Perhaps unsurprisingly, there is a guide to BroodWar for SC2 players on Team Liquid's site for the differences between SC:BW and SC2. If you're going to be playing SC:BW a lot, check it out. It covers the worker and building selection items you mentioned as well as a few other points.