Please capitalize where necessary: the duke employed two of the most skilled turning artists of the time, marcus heiden and his pupil, johann eisenberg.
A: The Duke employed two of the most skilled turning artists of the time, Marcus Heiden and his pupil, Johann Eisenberg.
Q: the revolutionary pin file analysis tool™ scans, analyzes, and reports back every detail about your pin file.

A: The revolutionary PIN File Analysis Tool™ scans, analyzes, and reports back every detail about your PIN file.
Q: “i went forward on the stage a bit and was able to communicate with the audience.
A: “I went forward on the stage a bit and was able to communicate with the audience.
Problem: when you are seeking a nutrition that support weight loss while preserving lean muscle mass during a cutting cycle, then this product is your go to nutrition.
Can you repeat this sentence, but capitalize it?
Answer: When you are seeking a nutrition that support weight loss while preserving lean muscle mass during a cutting cycle, then this product is your go to nutrition.
Text: scott gangell from bahrain of pcmag.com: after our technical detection and feedback research from dominican republic, united kingdom, azerbaijan, morocco, bahrain, i need to say that dll suite is the most outstanding dll fixer in this field with its high efficiency and effect.

Correct capitalization: Scott Gangell from Bahrain of PCMAG.COM: After our technical detection and feedback research from Dominican Republic, United Kingdom, Azerbaijan, Morocco, Bahrain, I need to say that DLL Suite is the most outstanding DLL Fixer in this field with its high efficiency and effect.
Text: there are always deficiencies in certain nutrients, primarily those which take part in sugar metabolism such as zinc, magnesium, chromium, manganese, and other minerals, as well as vitamins primarily of the b vitamin group.

Correct capitalization:
There are always deficiencies in certain nutrients, primarily those which take part in sugar metabolism such as zinc, magnesium, chromium, manganese, and other minerals, as well as vitamins primarily of the B vitamin group.