in 1775 he published five volumes of extracts from the ladies' diary dealing with:

How would the previous sentence be correctly capitalized?
Answer: In 1775 he published five volumes of extracts from the Ladies' Diary dealing with:
currently we have 391 behringer products 366 of them directly available in our treppendorf warehouse (and of course they can be tested as well in our shop) and 14 offers are in our current hot deals.

How would the previous sentence be correctly capitalized?
Answer: Currently we have 391 Behringer products 366 of them directly available in our Treppendorf warehouse (and of course they can be tested as well in our shop) and 14 offers are in our current Hot Deals.
castles and palaces, photos of castles and palaces, pictures - buckingham palace

How would the previous sentence be correctly capitalized?
Answer: Castles and palaces, photos of castles and palaces, pictures - Buckingham Palace
they are shuffled after every completed hand.

How would the previous sentence be correctly capitalized?
Answer: They are shuffled after every completed hand.