Should a beginner try to educate others about the benefits of Vipassana? As a practitioner (but a beginner) of Anapana and Vipassana meditation, I have realized and experienced the immense benefits of the technique and the immense potential of Dhamma to bring change and goodness in whoever applies it in life. As is natural, when one samples something as beneficial as the Dhamma, one cannot contain the benefits to oneself and is always tempted to suggest the practise of Vipassana to those around us, so that they may also start coming out of their misery. This is what I understand is one of the qualities of Dhamma, "Ehipassiko". 

But, the question really is, should a beginner like me even talk about it to others? Because, I still have my share of mental defilements and as a result I'm still prone to wrong thoughts, words and deeds. Therefore, although I genuinely feel like recommending the practise of Vipassana to others out of compassion, I'm apprehensive that I may not be the best example to show others what practitioners of Vipassana really are and that may as a result corrupt the idea of the Buddha's teachings in the minds of someone who may be listening to Dhamma for the first time. 

So, should one really talk about the Dhamma and Vipassana to others and if yes, when (at what minimum level of advancement or personal progress on the path, so that one inspires others as a personal living example)?
Well, if you take your own case as a guideline, most people really just need a point or nudge in the right direction.  Depending on how interested people are, you might share the benefits you've discovered.  

If it's a teacher or another great being who is putting practice into their daily life, talking and discussing can be great.  Especially view these people as pure guides so you can benefit as much as possible.

On the whole, the practice should transform your life and pysche, so if you are talking about practice without letting the transformation happen first, it's no good.  We must transform, then let our lives-as-examples embody the truth we wish to speak. 

Writing is also very important, so if you have a friend with whom you can write back and forth about Dharma, so much the better.  To journal your own notes and gather your thoughts is prime.

In general, if you are really interested in bettering someone else's life, a master would spend a decent amount of their effort trying to understand what that person needed and how they could present it in a gradual and follow-able way that would lead to fruition for the person, but also the knowledge that it is effort which carries you.