Taking advantage from the sportsbook bonuses is easy, it is not a rocket science at all, and everybody should do that, especially considering the fact that many of them are 4 digits bonuses.
First you will have to make the qualifying bet with your own money, and then you get rewarded with a bonus. Making the qualifying bet should be done at odds which are above the required minimum/therefore always read carefully the bonus Terms and Conditions/ and are as close to the betting exchange odds as possible. Here is probably good to explain to beginners the mechanism behind the bonus scalping. First you place the bet with the bookie and then you place the offseting contrary bet on a betting exchange of your choice in order to hedge your position and be safe whatever happens into the sporting event. Here we would recommend placing the qualifying bet at odds just above 2.0- this way you will most probably fulfill the min. odds requirement, imposed by the bookie, and at the same time find odds on the exchange, which are very close to the odds at the bookie.
Once the initial bet has been settled you will be rewarded with a bonus. Now the important thing to know is that as higher the odds you are placing the bonus bet at, as greater your profit will be. In this case we would recommend looking for odds of around 8.0-9.0 and of course immediatelly offseting them onto the exchange. To know how much exactly you should stake on every bet you can use this free bet calculator-
http://bonusbagging.co.uk/calculator.php. The basics are that whatever your profit from the bookie would be, the same should the liability at the betting exchange be.
Like we said- nothing complicated and as you can see from the homepage there are a whole lot of good bonuses to be taken advantage from.