When you update you should see in your Sins of A Solar Empire folder. You will see an icon called...... Dev.exe
Play the game using that. It might pop up some error and such but ignore them. Dev.exe is used by the Devs and modders to help us bug hunt and stuff.
Once you got your game started....you will see it plays just like normal SINS. But if you press Ctrl+Shift+. (might be , or / also) you will get a menu. From there you can mess around with all kinds of stuff. Like turning off the AI, or damage, or activating Quick Play which gives you a crap ton of cash, resources, instant build, no ability cooldown, all reaserach, and maybe a few other things. That sounds like what your looking for.
If you dont mind me asking why do you need a 'trainer'? If your having trouble, play a larger map with pirates off, and AI on easy. Its really the best way to learn by trial and error.