It can indeed be difficult if you're beginning and it's not a stupid question.
It is, on the other hand, also difficult to answer your question since a lot of different addressable led strips exist.
A similar question would be "I need a tyre", which raises the question "which model car do you drive ?".
If you're using the same materials as the facebook page you mention and tell which page it is, it probably is easier to find/get an answer.