Need help resolving an external link errors!

This is very important in my process of learning vc++. I will not be able to do it with out learning how to fix this error. I know how to
make a lib file with the static library project workspace but I don't know what to do with the lib file. I mean I put it in the lib directory
with the rest of them and then link my program with the lib and it still doesn't work. How do you get rid of the link errors. Like what
I am asking is how did microsoft make there library files so that the include files wouldn't have link errors. Thanks alot to who ever
will answer this. Try if you can.