Throughout the online writing community, among the many forums and networking groups, there will always be someone, most likely just starting out, who asks a question along the lines of:
“How do I go about accomplishing THIS?”
The variations on this are endless (as are the number of possible answers, but that’s another subject for another time).
A lot of the time, the question stems from a simple lack of knowledge; they just don’t know. Most likely, it’s about a subject which the more seasoned of us have an answer, probably having lived through it ourselves. Hoping to pass on the benefit of your experience, you provide an answer.
Is it what they were expecting to hear? Maybe. Maybe not. But you are giving them THE TRUTH.
With any luck, the question-asker is grateful and appreciative. A win for both sides. They learn something, and you fulfill the mentor role. Even if you just told them “For God’s sake, DON’T DO THAT!!”
And sometimes they don’t like the answer, possibly even getting angry and resenting you for telling them what is, in essence, THE WAY THINGS ARE. How dare you shatter their illusion in which they can do no wrong? They probably don’t realize how petty and thin-skinned they’re acting; two traits which will doom their potential writing career before it even gets started. Hey, at least you tried to help.
(Side note – this process is a two-way street. If somebody asks you a question straight out of the first day of Screenwriting 101, don’t insult or belittle them for asking it. You were in that exact same situation once too. Plus, it makes you come across as a total dick.)
If you’re among those just starting out, remember that nobody’s first script is at 100 percent. Mistakes will be made. Don’t be afraid of making them. It’s the only way you’re going to learn.
If you’re among those who’ve been down this road many times, be willing to take on the role of patient educator and help when you can.
Even though writing is for the most part a solitary activity, we’re still part of this community, and all in this together.
Maximum Z 
I try to help where I can, but sometimes it’s to direct someone to a helpful course I took. That’s especially true when they ask a laundry load of questions it would take a course, a book, or extensive amount of time to answer. It’s like they’re really saying, I don’t want to do the work or pay the price you did to learn. I just want you to tell me everything you know.
I get those as well. Imagine their reaction when your answer is basically “This is the difficult, challenging work you MUST do in order to get the answer you seek.”