I've seen a few guilds in my time with MMOs that have tried to do that. If you want to give it a go, more power to you. Just be careful of people that want free rides, purposefully leach off you, people that pretend to be new to get free stuff, and the list pretty much goes on. Any conceivable method of abusing your system can and will be used. So you will need to be careful doing it or you'll get walked all over.
I try to be helpful to people where I can, I'll give advice where it's needed if people ask, just using common sense with it. If you do, be careful giving it out without being asked first else you might come across as rude, though usually there are plenty of questions being asked, so you shouldn't have too much trouble.
Though as I said before, just mind your feet, the internet has it's own breeds of dick moves. lol