NotaryRotary is a Directory and excellent forum that still has free basic membership. Yes, you do have to log in so the database doesn't become stale, but, if you frequently login to the forum, you are automatically 'updated'. And, yes, they also do offer much in the way of notary supplies--seals, insurance, even toner.
However, the Notary 'search' feature defaults to a 30 mile radius (which can be manually re-set to 50 miles). Altho' I've been a basic member since its inception, due to the mileage limit, I rarely get any business from there.
Despite that limitation, it is the best site for getting a free reality-based education (from the 'school of hard knocks') and Signing Central--where companies are subjectively rated by notaries-- is absolutely invaluable to avoid non-payment and gain some insight into the companies that may call you. Someone mentioned earlier that a guesstimate is there's 150 years of experience feeding that site---wrong---I, alone, have 25 years experience (and still learning) and I'm not the most prolific poster there. My guesstimate would be 'thousands of years'.
And, yep, some members can be rough on newbies (and other members, for that matter), so my advice would be to just read it daily for quite a while and educate yourself before you make your first post. And use Signing Central...always.