Absolutely nothing unless you trained and put serious intention and effort into doing the work to summon the entities. It’s not actually that easy.
Also it was by Crowley who was a syphilitic, drug and sex addict largely full of complete shit. In my not very humble opinion, obvs. Sorry of he’s anybody’s sacred cow but honestly read up on his actual history.
There should be a disclaimer on the cover: "Actual demons not included "
Demon summoning kit: "Just add demons!"
No it isn’t. Read some more:
Also please make an introduction here if you didn’t yet:
Getting started Guide is in here:
What I do suggest, if that since you have now wound yourself up you have negative energy that can attract unwanted energy under the law “like attracts like”, and it’s worth cleansing your space to clear that.
The easiest way to do this is with smudging, for which you can use incense or saltwater. Tutorial here: