UPDATE

I have been researching into different documentaries and analyzing them in order to get an idea of what documentaries entail and what they include. My five documentaries are: Reverend Death, The End of the World Cult, Louis Theroux: Most Hated Family, The Seven Ages of Love and Dave Gorman: America Unchained. I chose these documentaries because I think most of them have a similar subject topic to what I want my documentary to be about. 

I have also looked at the codes and conventions of documentaries.

I have decided my beliefs will be Scientology, Atheism and Christianity and maybe 2 others. I am now researching thoroughly into these and will continue to do so, until i decide on the questions i will be asking.

I have written a letter to the Scientology department in Birmingham asking if there is someone who can take part in my documentary. I have also found an atheist and a christian to take part and I am currently looking for 2 more people who 2 different beliefs who can take part as well.