Please don't do this. The station is very busy and the commuters do not have time to navigate around people focused on their smartphones.
Instead, familiarize yourself with the general layout. There's no need to memorize the entire map, only the portion you will be using. Inside the station there are plenty of signs overhead and even on the floor to help navigate.
I always tell friends to just go to any east exit and make their way outside. That's most likely where they're headed and it's easier to navigate outside the station than inside.
Do you have an example? Your comment seems like an exaggeration, I have never seen any signs pointing to each other from every direction.
Also, I am curious of the justification. Why would anyone place signs that "... are incredibly confusing and often will all point to each other from every direction."
The problem I would typically have (not just in Shinjuku) was with directions that did not repeat/update as you continued on through junction points. It made navigation more stressful.
No, it's incorrect that signs "point to each other."
There are multiple ways to get to various lines' platforms. This is not signs pointing to each other, this is signs in different places pointing to the same destination.
I live in Tokyo and while I do not go through Shinjuku often as I mostly live and work on the east side, I have no issue using the signs to find the platforms and exits I am looking for.
If you pay attention to what the signs have written on them, they will take you where you are trying to go.
For what it's worth I was joking. I've only been Shinjuku as a tourist, so I unfortunately won't be able to familiarise myself with the layout, but I do feel your pain. I've seen the same thing in smaller stations in the London and absolutely hate it.
Instead, familiarize yourself with the general layout. There's no need to memorize the entire map, only the portion you will be using. Inside the station there are plenty of signs overhead and even on the floor to help navigate.