Topic Article Templates are like empty examples of the 'capsules' used to add content to your hub. You can choose a template that sounds like what you want. And then end up rearranging the bubbles anyway. It good that you are enthusiastic about getting it 'right'. But this is a simple first step that you don't necessarily need stress too much about. You can find more information on Topic Article Templates in the HubPages learning center.
I hope this helped,
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