Do you put a comma after words first secondly lastly?

You do not put a comma after the words "first," "secondly," and "lastly" when they are used to introduce items in a list.

Example:

* Correct: First, we need to gather the ingredients. Secondly, we need to preheat the oven. Lastly, we need to bake the cake.

* Incorrect: First, we need to gather the ingredients, Secondly, we need to preheat the oven. Lastly, we need to bake the cake.

However, if you use these words as adverbs describing the order of actions, you would use a comma after them.

Example:

* Correct: We need to gather the ingredients first. Then, we need to preheat the oven. Lastly, we need to bake the cake.

* Incorrect: We need to gather the ingredients first, then we need to preheat the oven, lastly we need to bake the cake.