I am on the verge of beating 3 FF games but need help on all of them. And I have some support to give more detail. Im going to need major help. I only beat FF7 and I feel wrong ;'(. Here I go...

FFI: Im supposed to enter some tower so I can fight Tiamat but I dunno where I find the item that lets me enter. Big help please...

FFIV: I have to fight the four fiends but when I beat them I had to fight the CPU and I died because it was right after I beat the four fiends. Help...

FFVIII: Same old same old. I have had problems with this boss for a hell of a long time. Adel. I beat her/him once because I used Selphie's "The End" limit. Then there were a series of sorcerers that I had to fight. I was zooming through them but then I died..Apparently. So I need 2 helps. Adel and the sorcerers...