click the turtle to gain turtle's. lol. Click diffrent blocks to buy things. Buying an upgrade requires you to have at least 10 cps helpers and then you will loose a quarter of them. By pressing "SELL ALL" you can sell all cps helpers (you don't sell upgrades) and you get half the turtle's they costed.
Have fun and submit your score (number of turtle's when you gave up. lols) Tip: buy lots of clickers and sell them to upgrade! That's the cheapest way to upgrade