I too am a newbie when it comes to story writing, and posting to forums. In the past the only forums I participate in are ones associated with finding technical solutions to websites, etc.
But I can already see the advantage of blogging my story - as it forces me to post something every day or two to keep on target to meet my goal. And I am sending an email to my extended family to let them know that I will be posting my story in progress on my website. Hopefully, that will provide "objective comments" and maybe even some additional information that I am not currently aware of.
By the way, I posted my rough outline last night. I am sure it will be adjusted as writing progresses.