Update

6/1/2019 - A new article has been published that describes an alternative approach to the aspect of the method described below that pertains to withdrawing funds from cold storage. You can either use the method described in this article, or a different method described in the new article. The pros and cons of the two methods are described in the new article. In either case, it is recommended to read all the way through this article, before reading about the alternative method for withdrawing funds, in the new article. After you do that, you can decide which approach best suits you.