Hola,
I am not going to do this newsletter for you but I can kinda help you as far as their lives.
So it says choose 3 family members so I was thinking maybe your mom, dad and grandparents and each of those family memebers it says write 2-3 sentences so for example this is what your paper is suppose to look like
Mi Madre:
-vida antes de que yo naciera (infancia) (Life before I was born; childhood)
(same goes for your dad)
Your grandparents you can explain what important historical events that happened in their lives and how it impacted them.
Usually when the teacher says 2-3 sentences I usually write more because teachers like it when you add more details in your paper.
So the first topic (the mom) you can talk about her childhood and how she met your dad,
the second topic can be the same.
The third topic you should talk about what historical events happened in their lives.
There you have it
Hope this helped :)
Have a great day