Text: your points are valid for three years from the date that you earned them, and the expired points are automatically deleted from your account.

Correct capitalization: Your points are valid for three years from the date that you earned them, and the expired points are automatically deleted from your account.

Text: read more about prices here.

Correct capitalization: Read more about prices here.

Text: the first cell phone i got was one of the first ones with color screens.

Correct capitalization: The first cell phone I got was one of the first ones with color screens.

Text: modern lamp from the ground, in coloured plexiglas and metal frame.

Correct capitalization:
Modern lamp from the ground, in coloured plexiglas and metal frame.