I've written one memoir, not published yet, and I'm working on my second one. The most important thing I've learned about writing memoir is that your subject has probably been done a hundred times already-SO you have to write yours with a new twist, something that hasn't been done and will make your story stand out compared to the rest. Sometimes you think you've got THAT story only to learn halfway through writing your own that it's already been done.
I recommend going to your local major bookstore and find the memoir section. Look at all the books on the shelves and try to figure out where yours would fit in. Does it fit in at all? Is it something that's been done a million times? Is there a particular theme to your memoir that is missing from the rest?
Memoir can be hard to write: emotionally, physically, mentally, and yes, even financially with the risk of being sued. So make sure you know what you are getting yourself into before going ahead with your idea.
Oh, and by the way, WELCOME!!! (I'm relatively new too!)
Thanks,
Robin