What do you run then scruff?
As mentioned already... Try lower pressures and higher volume tyres if lower pressure isn't enough, I run 25psi in a 2.3 and 30psi in a 2.1 (with tubes) and i'm not that light (14stone with kit). Worth checking pressure if you have air forks, if they are too firm or rebound too high you will be fighting them on the return stroke. Have a play with riding positions as well, I find it's a fine balance, you don't want too much weight at either end, too upright and you will have less weight on the front so climbing and control on cornering wont be as good and most of the impacts are going through you backside\back and less through the forks.
If like you said you are new to it all you will find with time you will feel a bit more at one with the bike, as cheesy as that sounds. I find I hover a couple of inches above the saddle when it gets rough, just the brief moment of the impact whilst still turning over on the cranks, as mentioned you can always ride out the saddle if it's that bad.