all our packages include maintaining of the system, hosting fee, automatic backup and user guides. as customer you will also get free education, system setup and conversion of data from other systems.

How would the previous sentence be correctly capitalized?
Answer: All our packages include maintaining of the system, hosting fee, automatic backup and user guides. As customer you will also get free education, system setup and conversion of data from other systems.
the largest number of insane are insane because of such anti-social connections and do not recover easily for the same reason.

How would the previous sentence be correctly capitalized?
Answer: The largest number of insane are insane because of such anti-social connections and do not recover easily for the same reason.
find the flight of stairs, click on them to move up and reach the 16th floor to win the game.

How would the previous sentence be correctly capitalized?
Answer: Find the flight of stairs, click on them to move up and reach the 16th floor to win the game.
however, it was not easy for anyone teaching in the universities because of government policies.

How would the previous sentence be correctly capitalized?
Answer: However, it was not easy for anyone teaching in the universities because of government policies.