You can link to external information sites as much as you wish. Where it becomes murky would be if you, yourself, had written an "information site" and then started posting links to it. That would qualify as "advertising", and such links would be deleted as spam unless you'd first paid CCF for putting the link there. Website owners spamming links to their own websites is how most of our blacklisted sites got on the blacklist in the first place.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis