Have you chosen what you are going to write about?
or an ancestor? (to start it would be better to choose one)
And then -
Think about who your audience (readers) are going to be?
Are they your family?
Are you going to post on a blog?
Do you want to publish it?
Then take out all your research if it's an ancestor you are going to write about and familiarise yourself with all the research, I have suggested using two notebooks; one for writing down ideas and the other to expand on the ideas. Some have said they would prefer to use their phones or tablets, its whatever makes you comfortable using really. I am rather old fashioned and much prefer pen and notebooks.
At this stage it doesn't matter about a polished piece of writing - so put aside the editor side of you, and just concentrate on writing. Of course it doesn't matter at all for the first notebook because you are just making notes at this stage.
I won't overwhelm you with lots to do, so will be back tomorrow for the next stage of our project.
If you have any questions comment below or post in the group.