I found this great article in the March Ensign (an LDS monthly magazine) all about making food storage a part of our everyday lives.
I can personally testify that my family has received both spiritual and temporal blessings from following the counsel of our Prophet. No matter what your financial situation is, you can prepare by taking home storage step-by-step. "Home storage is not an event, it is a process." And if it feels like nothing is going your way, have faith, pray, and the Lord will bless you!!