DCI Kate Meynall, Senior Investigating Officer on the case, describes the circumstances of Daniel Bartlam's crimes as "shocking and difficult to comprehend."
A statement has been read on behalf of the parents of Jacqueline Bartlam, whose teenage son has been jailed for her murder.
Jacqueline "was a wonderful, loving and caring woman," it says. "She was a determined woman who worked hard to become successful."
The teenager's activity on video file sharing site YouTube showed that he watched clips from various soaps and the horror film Saw.
In one video he posted featuring himself, he was excited about a new computer.
He's seen saying:
It has finally happened - I now have an iMac - I can now make bigger and better videos!
Jacqueline Bartlam could be identified only by dental records, after her body was recovered from the blaze on April 25 last year.
The court heard how her son, Daniel Bartlam, had been inspired to carry out the killing by a plot in Coronation Street, where one of the characters John Stape, had killed a woman with a hammer.
Bartlam had claimed the killing was not murder because he had lost self-control.
The court heard how Daniel Bartlam hit his mother seven times with a claw hammer at their home in Georgia Drive, Redhill, Nottingham.
He then poured petrol around her bedroom before lighting newspaper on a gas fire and setting the property alight.
A 15-year-old boy has been detained for 16 years for killing his mother with a hammer after being inspired by a plot from Coronation Street.
Daniel Bartlam killed his mother Jacqueline in a hammer attack at their home before burning her body.
Today the judge at Nottingham Crown Court lifted reporting restrictions allowing the media to name the teenager, who the court heard had been inspired to carry out the murder by a plot in ITV soap Coronation Street.