It’s a very simple procedure to do once learned, but as with most everything in learning music, it takes patience and practice to get right.  We had to learn to make drum tracks the first semester at Berklee and once I learned how to create a drum track it was super easy to put together my own songs. 

You’ll need a simple recording program like Garageband that has pre-recorded drum tracks and you’ll need a midi keyboard(or you can just use the virtual keyboard if the software has one).  So, a keyboard with USB port to plug straight to your computer.  On Garageband, or Logic as well, you can go through the library of pre-recorded drum tracks.  They’re called “software instruments” on Garageband.  Then you can mess around with different drum sounds to find what will fit the type of song you’re trying to play along with.  Then you need to create separate tracks for each drum sound.  So, you need one track for bass drum, one track for snare, one track for high hat and so on and so forth. 

After that you can quantize all these tracks to get perfect timing.  You can quantize them for 1/16 notes, 1/8 notes, 1/4 notes, etc.

You need to have a general idea of how a drummer plays a drumset.  So for example, 1/8th notes for high hat, hitting bass drum on beats 1 and 3 and snare on 2 and 4. 

This is actually a good way to learn how to keep timing if you’re not a drummer because it gives you a simple framework of the breakdown of the beats in a song. 

Other than that, it takes a little bit of time messing around with a simple midi program to get the feel of how to use it.  Hope this helps!