This site introduced the Kreg Jig which was a game changer as far as allowing me to give this a go. Thanks to the various posts for inspiration particularly Suzie_R. I added an off the shelf guard on the bed - photo to follow. I built the dimensions to fit a day mattress that I bought.

Estimated Cost
I expect that I spent around $100 on pine for the job and I made an initial investment on the Kreg Jig.
Estimated Time Investment
Weekend Project (10-20 Hours)
Finish Used
None until the chalk and crayons come out!
Recommended Skill Level
Beginner