Before you attempt the purchasing training guide, you must complete:
The skills covered by the training guide segments listed above are taken as assumed knowledge. Do not proceed with this segment of the training guide until you have reviewed the training guide segments listed above and successfully completed the skills test at the end of those earlier training guide segments. You can't successfully complete this segment of the training guide without the skills covered in those earlier segments. There are no effective short-cuts! Don't sell yourself short by skipping those essential skills.
Watch those training videos on Purchasing:
(Before using any videos, don't get stuck with viewing a tiny image, see How To Play Videos )