to draw a line I click the line command than click a point now can I just type a distance or do I have to give the x,y,z cord?

You can give it a distance in 2 forms...

@1<45, 0 .... this means from where you are at, go 1" at 45 degrees and keep Z at 0

@1,2,3 ... This means from where you are at go a distance of 1 in X, 2 in Y and 3 in Z

I found that you don't have to use "@" you can just type 1,1,1.

If you don't put the @ sign in, it uses absolute coordinates not relative(incremental)

That is good to know, thanks.