Surgeslayer

Hey y'all, I'm new to this site, but I've loved Ford's all my life. I just recently purchased my first truck, a '95 F-150 xl. I am having a little problem with it and I thought I'd ask y'all on here what it could be. I'm not very good with diagnosing problems with vehicles and whatnot, but it's a manual and when I shift, the gears grind a little bit, except shifting into 5th, that one's never ground...but about 70% of the time shifting into the other 3 gears they grind, sounds like the clutch isn't engaging all the way. But like I said I'm not entirely sure. Could anyone give me an idea what it could be?