the quali-fi design lines are brought to market in a number of countries.

How would the previous sentence be correctly capitalized?
Answer: The Quali-Fi design lines are brought to market in a number of countries.
keep backup of all the files in a separate drive so as to get it back easily if any data loss occurs

How would the previous sentence be correctly capitalized?
Answer: Keep backup of all the files in a separate drive so as to get it back easily if any data loss occurs
student support:students are entitled to personal support from the course author allen keele via phone and email. it is not something that you may find everyday i.e. instructor support over the phone

How would the previous sentence be correctly capitalized?
Answer: Student Support:Students are entitled to personal support from the course author Allen Keele via phone and email. It is not something that you may find everyday i.e. instructor support over the phone
the photographs were taken using an analogue camera with up to an eight minute exposure time.

How would the previous sentence be correctly capitalized?
Answer: The photographs were taken using an analogue camera with up to an eight minute exposure time.