Please have a look at these BBC Learning English sections.
Vocabulary points to take away
To start a story:What happened was …
It all happened (when and where)...
To end a story:
In the end …
Sequencing
Firstly / To begin with / To start with
Next / Then / After that
In the end / Finally
Showing interest
Wow!
Really?
What happened next?
Adverbs
Fortunately
Unfortunately
All of a sudden
Luckily
Quickly
