Can someone make me a simple circuit?
Basically, you want the same exact circuit as simple LED Strips have. Multiple parallel segments of 3 leds in series with a resistor.







simulate this circuit &ndash; Schematic created using CircuitLab

24 leds, divided by 3, that's 8 segments, at 16~20mA each is only 160mA at most, which your supply can provide no problem.