The Do's and Don'ts of writing on a GA

I've seen many GAs promoting youtube channels, twitch, etc. I want to make a batch of, long overdue, giveaways, but since there's always hundreds of participants but only a winner, I'd like to make a positive impact in all the people that read the GA by offering some general life advice that has been invaluable to me throughout the years.

To make this, I'd need to link to several external sources, a couple of blogs, etc. I reread the FAQ, but I wanted to ask you all before doing anything. The links would be merely informative, without anything fishy or "buy this/buy that" clutter (that's what a "referral link" is, right?).

So, my question is: Is ok to do this?

Sorry if it's explained elsewhere or I overlooked it, but I always like to double-check.