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The other option is to simply purchase entire midi songs with the drums included. Picking one here and there would be both cost effective from a money AND time perspective. You can almost instantly see what is happening, and with the ability to hear them! ................
HeartoLearn beat me to the punch, pun intended. I will add that I would start with free MIDI files. Yes some a crap but many are very good. Plus the drum tracks in the free files maybe identical or very close to the purchased files. I have used the drum tracks from the free MIDI files. Plus your drums are lined up with GM drums.
If your method was just a learning technique then just ignore this message.