Welcome!
A few tips - You'll see certain questions featured when you open the page (based on your location, expressed interests, etc.), but you can go to "see all of today's questions" to get everything.
You can go to your in box to see who send you a "flower" which is basically a "like" - when someone liked your response.
We use certain abbreviations and acronyms (e.g. DD is darling daughter, DH is darling husband, SIL is sister-in-law, etc.). If you aren't sure, you can ask publicly or you can send a private message - but not everyone checks their in box regularly so if you don't get a reply, don't be offended.
Yes, you reply in the "So What Happened" slot, which is abbreviated SWH. It's a public response and will only be seen by those who come back to the question after they have written their responses. Some people do that, some don't. You can personalize your SWH with someone's name, or you can just add in some edits to clarify something. "ETA" means Edited To Add, by the way - to show clarification. You can do that in your original post or in the SWH section.
If you are asking a regional question, looking for info on a specific area or city, then put that city in the TITLE of your question, not just in the body. It saves time and gets your question noticed by people who know that area.
The questions need not be limited to parenting - people ask about travel, spouses/partners, parents, recipes, home repairs, all kinds of things. There are also a few men on the site and they are welcome too.
Do keep your info relatively private - but "C. from Austin with a 10 year old" is pretty vague - I think you're safe!