Hello Jackie,
There are loads, unfortunately, none will be quite as simple as Matched Betting though. One simple way to do it is to just stick to the lessons in the courses section and offers vault 🙂
Other back to lay strategies can be found, although they do include a few more variables than Matched Betting making them more advanced. I would recommend sticking to this Betfair Trading Blog for that though.
The main thing you need to find is a defined ‘edge’ that provides you value (much like the free bet bonuses do in the tutorials on this site).
Cheers,
Caan