Here are a couple of photos of my Accuquilt GO! Big (it's electric). Maybe it takes less room than a crank machine, because, no crank that sticks out and you don't need a table long enough to catch the die? It is 18" long open, as you see it here, and 19" wide. I don't bother closing it; I lay things temporarily on the top when not using it. I stand at the side, push a button to turn on the machine, put the die in the front, reach to the back and take the die as it comes out of the machine. On better days, I rotary trim my fabric and cut a strip to cover the die shape by 1/4" on each side. On worse days, I rough cut my fabric with scissors, so there is more waste.
I found navigating the dies to be very confusing at first. Your best bet would be to look at the Block Qubes. These are sets of eight dies that are sold together, in the shapes you typically would need for various size blocks. I believe they make Qubes for 4" and 5" finished blocks, which I haven't looked into since a 6" block is small enough for me. I have the 6" and 9" block Qubes. The 6" Qube contains dies for a 3" fin. square, a 1 1/2" fin. square, a 1 1/2" fin. HST, a 2 1/8" fin. square on point, a 3" fin. HST, a 3" fin. QST, a parallelogram and a 1 1/2" x 3" fin. rectangle. Some of the dies have more than one of the indicated shape on the die. To make 1 1/2" by 3" flying geese, I use the 1 1/2" fin HST die and the 3" fin. QST die.
This wouldn't be practical for me if I had to move it when not in use, but I just happened to have a set-up that it fit into perfectly. I only had to re-locate the stuff I had kept on the dresser top (which rolls, but doesn't roll unless pushed determinedly, as it's full of fabric and notions). The dies are expensive, but you can find sales throughout the year.