I just finished up following the list of tutorials, and have almost nothing to complain about. For those that are stuck on why the proximity trigger won’t work when following the tutorials, set enable to be true on the proximity trigger node to make it trigger. This took me quite a bit of time to figure out, as it wasn’t in the tutorial. Hope this saves someone some time in the future.
My biggest hurdle was in turning off the helpers in an earlier tutorial and forgetting how to turn them back on when I continued into the next tutorial days later! This made the tutorial where you set up a block that shoots balls at the wall of blocks particularly difficult until the helpers were re-enabled.