I edited my post and added a hand-drawn simplified map to the third spoiler. I have uploaded it to the Portal long ago after I just started; it helped a couple of players before.
Either way, it also helps to use pen and paper (like I did) or a screenshot of a system map (can be seen on Wiki) and Paint to map the jumpholes (by drawing arrows from one jumphole to another) if you're bruteforcing it.