Please capitalize where necessary: are you ready to make a difference for 500 million people?
A: Are you ready to make a difference for 500 million people?
Q: it is free of charge and does not require special pc knowledge!magic speed will analyze your applications, which are loaded with your pc boot-up.

A: It is free of charge and does not require special PC knowledge!Magic Speed will analyze your applications, which are loaded with your PC boot-up.
Q: in return for their servility, the danes get valuable ‘training’ from the israelis:
A: In return for their servility, the Danes get valuable ‘training’ from the Israelis:
Problem: this house is (also) full of zombies! keep the undead at bay whilst attempting to escape your butt out of here...
Can you repeat this sentence, but capitalize it?
Answer: This house is (also) full of Zombies! Keep the undead at bay whilst attempting to escape your butt out of here...
Text: upcoming features and services involving third-party and ad-supported content will require plex to collect and, in some cases, share information about the third-party content you are streaming.

Correct capitalization: Upcoming features and services involving third-party and ad-supported content will require Plex to collect and, in some cases, share information about the third-party content you are streaming.
Text: multiple addon deactivator is an add-on for firefox that adds options to quickly enable or disable multiple add-ons in the browser.

Correct capitalization:
Multiple Addon Deactivator is an add-on for Firefox that adds options to quickly enable or disable multiple add-ons in the browser.