Hi Ann,
Application of newly acquired knowledge is the key to engaged learning. The hows and whys of knowledge application does much to motivate students especially in the core courses as you mentioned. By creating a clear picture of career use for students you will be doing a great service for their career planning. You will be helping them to create a future for themselves.
Yes, the Career and Technical Educator's Survival Guide is out of print, but I have been able to find used copies through Amazon after several attempts. You never know when a copy will pop up.
Gary