Questions & Answers about Ik heb informatie nodig.
In Dutch main clauses you follow the V2 rule: the finite verb (heb) occupies the second position and the subject (Ik) is often first. The adjective nodig is part of the predicate and therefore comes after the direct object (informatie). The fixed construction is nodig hebben (“to need”), but you split it around the object:
Ik (subject) + heb (verb) + informatie (object) + nodig (predicate adjective).