im trying to make bombs drop.

i just started using construct 3. i have knowledge to about where the tutorial left me. but im trying to make a sprite loop/repeat from above the screen. i want it to look like bombs are dropping through the screen. i can get the bombs to drop i just dont know how to make them repeat every couple of seconds. can anyone help me?

You can use the system condition "Every X seconds".

You will likely want to use the "random()" system expression as well (to randomize X positions or the time of drop).

You should have a look at the "How do I FAQ" topic for Construct 2 that shows you how to implement game mechanics.

You can also check out the Construct 2 tutorials.

This documentation translates to Construct 3 very well.