Out of request I will be linking every guide contained on this forum in this thread for ease of access.
Rohime's Guide to Turret Buff - http://www.sc2gump.com/threads/9357-...etBuff-updated
Description: This is by far the most advanced/comprehensive guide on the forum. I would highly suggest reading it if you would like to improve. All information is labeled is a PDF file, and a replay of the build in action