English Phrases and Sentences for Expressing Sequence

Firstly, secondly, thirdly...
In the first place, in the second place, in the third place...
To begin with, next, finally...
Initially, subsequently, ultimately...
At first, then, lastly...
As a first step, as a second step, as a final step...
In chronological order...
Step by step...
Gradually...
After that, afterwards, subsequently...
Following that...
In the following order...
In sequence...
According to the timeline...
The first thing to do is..., the next thing is..., and the last thing is...