Please capitalize where necessary: forecasts look almost the same as on windguru.cz and show up-to 72 hour (3 days) forecasts.
A: Forecasts look almost the same as on windguru.cz and show up-to 72 hour (3 days) forecasts.

Please capitalize where necessary: now even the cds become obsolete and are replaced by mp3s and the ipod's that can play digital audio files.
A: Now even the CDs become obsolete and are replaced by MP3s and the iPod's that can play digital audio files.

Please capitalize where necessary: let's understand! right here is the point of difficulty.
A: Let's UNDERSTAND! Right here is the point of difficulty.

Please capitalize where necessary: the category which he will be competing is ornamental/celtic.
A:
The category which he will be competing is Ornamental/Celtic.