The Noita Wand Simulator, created by salinecitrine, is a tool that will construct the spell evaluation tree for any sequence of spells you can come up with. If you're confused about what your wand is doing, then plugging it into the simulator will likely help you clear things up.
Here's the link: https://noita-wand-simulator.salinecitrine.com
There are many examples in the Expert Guide series, and the wand simulator has them all as presets. If you find yourself confused by an example, or just want to look at the tree, hit the presets button in the top right and select the example you're working with. From there, you can see how it's all working, and even switch things around to see what would happen if things were different. Spell mechanics get very technical at a certain point, so doing this is a great way to check your understanding.