This step couldn't possibly be easier. For those of you who want to build your own spice base, more power to you, but I prefer to use pre-packaged taco seasoning mix. It's convenient and a lot cheaper than buying all sorts of different spices. Follow the directions on the back of the package, since they will vary with brand. Cook until all liquid has evaporated and infused your ground meat with taco-y goodness. At this point, you can add salsa, tomatoes or shredded lettuce to your filling. My boyfriend doesn't like any of these things so I'm leaving it plain this time. Next time I will add salsa.