In principle, absolutely not. As mentioned in other answers, there really is very little interaction between the OP and the answerers. If you are an OP, you ask a question. It gets answered by somebody. You may or may not understand the entire solution provided. Not only is the answerer not under any obligation to help you further, but (s)he is discouraged from doing so here.
In reality, I have found that there are folks on this site that, for whatever reasons be it too much free time on their hands, overeagerness, desperation for rep score, lack of self-confidence and awareness,..., that are more than happy to provide free tutoring services to those lucky and/or manipulative enough to recognize they are being served by a sucker. So if you see someone who keeps answering your follow-up questions, no matter how little work you are willing to do on your own, congratulations!
(I am still amazed that some of these free service providers have tried to convince me that this is our duty to tutor random, lazy people on this site endlessly! Does time not mean anything to these people? Do they have any dignity?)
So, please, use this site first and see how far you can get on your own. If you continue to be stuck and need to ask a lot of follow-up questions, then you likely need a tutor.