What should I do to get some small babysitting jobs/how much should i charge?

I would p on babysitting jobs, most mothers will not allow a 17 year old that they don't know to babysit their child. I would advise a few days at a nursery group if possible, then you can get to know some kids mothers, and then offer your service, or even a mother and baby club at your local church etc, even try advertising on certain websites that have forums