Text: of course i made a donation to you guys!

Correct capitalization: Of course I made a donation to you guys!

Text: the above-mentioned development of the intelligence or mental attitude of the individual must inevitably result in strongly marked materialism or atheism.

Correct capitalization: The above-mentioned development of the intelligence or mental attitude of the individual must inevitably result in strongly marked materialism or atheism.

Text: the tried and tested three-stage categorisation system premium, comfort and allround for the accessory articles also describes the properties and areas of application.

Correct capitalization: The tried and tested three-stage categorisation system PREMIUM, COMFORT and ALLROUND for the accessory articles also describes the properties and areas of application.

Text: of course i made a donation to you guys!

Correct capitalization:
Of course I made a donation to you guys!