Novelty fires are great fun and effective attention getters.
After that, learning:
Efficient tinder collecting.
Best woods and how best to procure them.
Different fire lays and their purposes. A cooking fire is different than a night fire for warmth, etc.
How to start a fire under difficult conditions. Wet, windy, numb hands, etc.
Where to situate a fire for safety and best utility for cooking, sleeping, etc. (I suppose the whole safety thing should be first.
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From there you can go into fire beds, Dakota holes, ember holders for retaining coals to start a fire later, assorted implements made from natural materials to help with various fire tasks. Tongs, hearth, pot suspenders, spit, etc.
Getting that first flame is important and quite fun but is really not very useful without the rest of the picture. Knowing how to properly lay and maintain the fire for the desired task makes all the difference.