maybe i'm just an idiot, but i never had trouble with shifting before on my toyota pickup (yea i know the clutches aren't the same, but that pickup actually had a pretty stiff clutch). sometimes when i am going from a stop to 1st gear, it seems as if there's some resistance preventing a shift into 1st. if i let go of the clutch, sure enough, i get grinding. at first i thought that it might have been a lazy foot, but once i actually had my left foot pretty much all the way to the floor and the gear still grinded when i tried to get into 1st. if i take it back out and do it again, it works fine. what might this be? i don't know a whole lot about my car (or cars in general yet), as it's a relatively new purchase and i've always had semi-junkers before that i didn't take great care of, so this may be something very simple.
is this something as simple as transmission fluid or simply bad driving? or is it possible that something else is wrong?