To start the game you should probably buy a dart monkey. you can place him were you want, but you want to make sure that it will pop all of the balloons.

When you get enough money you can buy whatever you want from then on.

Banana farms are really helpful, but you want to make sure that you can survive without so much money for the banana farm

Leveling up isn't hard either, all that you have to do is pop a lot of balloons!

If you can't beat the level of hardness your trying, then you should go down one, and if your on the easiest then you should just keep on trying new ways to start.

If you follow this guide then you should be able to get a sun god eventually

P.S. There is one glitch that I know of that isn't patched, what you do is hover your UNPLACED monkey tower over a spot were it can be placed, then you right click and go onto a place where it can't be place and click again. You should be able place it wherever you want!!!!!