Step 1: Log in to Your Blog at Www.blogger.com
Click "Sign In"
Step 2: Find Your Blog Title and Click the Orange Pencil Button
Find the blog you want to add a post to and click the orange pencil button to the right of the title.
This is a quick link button to add a post.
Step 3: Add a Title to Your Post
Step 4: Add Your Content
Step 5: Optional: Add Tags/labels, Schedule a Post Time
Also you can schedule a time for blogger to auto publish your post, just click "Schedule".
Step 6: Click "Publish" to Make Your Post Live
Optionally you can click "Preview" to make sure it looks the way you want it to before publishing. Just remember to come back and publish.
If you want to save it as a draft to come back to, press "Save".