Please capitalize where necessary: especially helpful for beginners, this guide also offers extra insurance to experienced piecers.
A: Especially helpful for beginners, this guide also offers extra insurance to experienced piecers.

Q: if your pc opens the xbs file, but it's the wrong application, you'll need to change your windows registry file association settings. in other words, windows is associating xbs file extensions with the wrong software program.

A: If your PC opens the XBS file, but it's the wrong application, you'll need to change your Windows registry file association settings. In other words, Windows is associating XBS file extensions with the wrong software program.

Q: unfortunately that sort of reports is rare in the electricity business.
A: Unfortunately that sort of reports is rare in the electricity business.

Problem: a photo slideshow screen saver with experimental aircraft photos from nasa and dryden flight research : part ii.
Can you repeat this sentence, but capitalize it?
Answer: A photo slideshow screen saver with experimental aircraft photos from NASA and Dryden Flight Research : Part II.

Text: breakfast and lunch included.

Correct capitalization: Breakfast and lunch included.

Please capitalize where necessary: sierra de guadarrama national park
A:
Sierra de Guadarrama National Park