Peter
I am assuming it is this scope here?
http://shop.australiangeographic.com...e-150eq-2.html
Firstly, congratulations on taking the plunge!!
I try not to say "throw it away and buy a real telescope" as my philosophy is that if you have bought a scope, the best thing you can do is get out and use it and our job is to help you get the most out of the scope. That largely means helping you to understand the strengths and weaknesses of the scope.
I love dobs for visual use but they have weaknesses that must be understood to get the best out of it.
The strengths of your scope are that it has some nice aperture. Not that many years ago a 6" scope was a big scope. It also will track the sky with it's motorised RA drive in a manner quite suitable for visual use. For imaging, this combo is a bit restricted. I had some success with mounting my DSLR on the top of the scope (piggybacking) and shooting through a 50mm lens rather than through the scope itself. With fairly short exposures, I managed some quite nice widefield results.
With collimation (hopefully the scope came with some basic collimation instructions?) a scope like this at f6 is fairly tolerant of small collimation errors. That doesn't mean yopu should ignore it, just don't obsess about it!!
The main limitation, which you will discover soon for yourself is that newtonians on EQ mounts sometimes put the eyepiece in some interesting positions. Kneeling down in wet grass trying to look through an eyepiece that is pointing straight down at 1am is not always fun.
Apart from that, as already mentioned, try to get the best polar alignment you can and learn to balance the setup, again the scope hopefully has some with instructions how to do that.
Good luck with it and enjoy!!
Malcolm