BRINE SHRIMP!!!! PLEEEEEASE HELP!!!!! getting them to reproduce?

OK. i KNOW how to hatch them ALREADY. What i need to know is... Once the eggs hatch(and I want THOSE eggs that hatched to someday produce more eggs) what do I do specifically? like do i seperate the ones i am going to feed to the fry and the ones i want to reproduce more eggs?? Also can you pick the EGGS up with a turkey baster or should i use a net. please think of explaining this to a dummy.