Lauren Luke is a 27-year-old single mother from South Shields near Newcastle in England. She's also an internet superstar.

Her self-help beauty and make-up tutorials have been viewed more than 50 million times online; her YouTube channel has 250,000 subscribers in 70 countries.

It's a testament to what people can learn online these days.

So what have you learned on the web? Playing the guitar? Baking a cake? Write in and let us know - below, or on ConnectTheWorld@CNN.com.

We'll read the best responses on air when we interview Lauren Luke and take a look at other online tutorial megahits. Tune in 9pm London time.