Please capitalize where necessary: the gyrotwister xbeam is the training device that's addictive - in a positive sense: the latest tests from germany show that training with the gyrotwister significantly improves your grip.
A: The GyroTwister Xbeam is the training device that's addictive - in a positive sense: The latest tests from Germany show that training with the GyroTwister significantly improves your grip.

Q: the penthouse apartments consist of two floors and located on the two upper layers of the three apartment buildings with a total of only three floors.

A: The penthouse apartments consist of two floors and located on the two upper layers of the three apartment buildings with a total of only three floors.

Q: at the time of the last ice age the climate of the sahara was quite different from what is now.
A: At the time of the last ice age the climate of the Sahara was quite different from what is now.

Problem: most often this cosmetic defect appears in adolescence during the period of active puberty and hormonal changes.
Can you repeat this sentence, but capitalize it?
Answer: Most often this cosmetic defect appears in adolescence during the period of active puberty and hormonal changes.

Text: planning 5. igs for the school year 2011/2012: planning costs

Correct capitalization: Planning 5. IGS for the school year 2011/2012: Planning costs

Text: electric lighting is automatically and stays on until the clock 22:00.

Correct capitalization:
Electric lighting is automatically and stays on until the clock 22:00.