Transitions are words, phrases, and sentences that help your readers to know where your ideas are going. Transitions help give coherence to your writing.

Here are some transitions you should know and use:
When you’re ADDING something on… (AND)

Also, furthermore, then, in addition, plus, too, moreover, additionally, as well as, first, second, third (etc.), along with, including, similarly, last but not least

When you’re showing the OPPOSITE or CHANGING DIRECTION… (BUT)(OR)

On the other hand, however, instead of, yet, on the contrary, conversely, although, then again, whereas, even though

When you’re drawing a CONCLUSION from something… (SO)

In conclusion, therefore, to sum up, finally, all in all, overall, in total, in summary, as a result of, lastly, ultimately, consequently, hence, since