I agree. A few of the tips in this thread are way too spoilery imo. I'm not the kind of person who usually cares too much about spoilers, but Disco Elysium is an exception. You just need to go in and experience it. The only ones I would say (and they've already been mentioned by ssjmarx and others) are not to be afraid of failing checks and that it's probably better if you can avoid savescumming.