The second one, Fiction Techniques #2: Characters Wanted, will go up for free after that for a few days. These are both expansions on material that was included in my nonfiction book on writing, Write With Fire. The third one, Fiction Techniques #3: The Twist Ending, is brand new so I probably won't make it free. It's just 99 cents, though.
If you're a writer, why not try the free one and see if you find the series helpful. If folks do find them helpful, I may write more. And there is always Write With Fire, which has many other articles and essays on writing, including tip pieces and marketing pieces.
Happy New Year