4 Channel Relay Module

I am just getting back into the Arduino world. I have just added a 4 Channel Relay Module to my collection of bits. Can someone point me in the right direction as regards wiring it up and code? For example, I would like to have the relays switching in sequence, putting LED's on at the same time. As an old fogie I could do with a little help to keep what's left of my brain cells.

Thanks

Brian

P.S. This is the one I have bought.

Here's a wiring diagram, hope it helps.
Graphic by @dlloyd:
D0upWXs_d.jpg
Just ignore IN5 - IN8.
You should use a separate 5V power supply for the relay board, 4 relay coils draw near 300 mA, too much for the Arduino's 5V regulator and a strain on USB power.

Thanks, will have a go at that.

Brian