Step Two Screenwriting

My final idea evolves around a drug addict therefore i will have too research the sort of drugs that this poor, homeless drug addict would be able too afford and would be realisticly addicted too, maybe using websites like FRANK as it is a good source of research on drugs, i can also get leaflets on FRANK drugs information from alot of librarys.
Therefore i can use a range of primary and secondary research for this step in my screenwriting unit. Most secondary research would be helpful towards me as its about illeagal drugs therefore alot of primary research tasks would be unsuitable as it could make people uncomfortable for surverys, questionaires etc.
My idea is also about conspiricy towards the goverment and what they could do if someone found a cure for HIV, I am unsure of what the goverment would really do if that happend but im going too research some conspiricy theories online too get a general outline of what some of the stories are like.
I can use some sources of primary research such as a questionaire with police, giving general questions on what percautions they would take if someone was caught in possesion of drugs or under the influence of drugs, ofcourse explaining that im doing it for my college work.
I could do an online survey but it can be taken off due too censorship as drugs are considered innapropriate too talk about in most circumstances as the internet can sometimes be as strict as the TV industry in censorship depending on what websites and sources i intend to gather the primary research on.
There is alot of different sources i can use too gather my research wether it's primary or secondary.