Starting a chevy K/C 1500? it wont start?

I have a Chevy K/C 1500. 1995. Manual V6, 4.3 liter i think maybe 4.0. The problem is this, i tried to start my truck one morning, and it wouldn't start. i have power to my radio, i have power to my lights, but there is no starter craning. the starter is actually fairly new, i once had a problem with my started and i changed it, this happened like 3 years ago. now, i cant even get the starter to even crank. i went to a friend, and he said it is most likely the fusible link. i went to the auto parts store and they cant even tell me the type of link it is. they told me to find it, take it out and bring it to them. of which i tried, but i cant find the damn thing.

can someone tell me where i can find it, or maybe give me the link to a fairly good auto parts Manual/guide online? i just want to be able to fix my truck, i don't want to bring it to a dealer cause they are to expensive.

also, when i called the auto parts store, they then gave me a few other things that can be wrong with my truck. maybe someone can tell me what other things i should look at?