Hi there,
There are plenty of webpages out there that can help you with learning how to fish (Google is your friend!).
As for including hooks, sinkers and other fishing items in a PSK, a while ago I added what I know would allow me to catch species I already know about (lake trout, for example). However, i'm not so sure i'd really catch something in a real situation. In other words, it might not be worth the energy expenditure to rig up and play around trying to catch fish. Your energy should be kept for important tasks such as feeding your fire and making sure you're ready to signal overhead aircraft.
It is well documented that you can survive for a while without food. I think it's safe to assume that if you are to be rescued, you probably will be before you starve to death.
I am considering taking the fishing items out of my PSK, as I think they're only "feel good" items.
My 0.02$. <img src="/images/graemlins/grin.gif" alt="" />
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"The only easy day was yesterday."