Can someone explain me....

[Samantha Puppy]

Dang Kay, you said it much better than I could have!

And no, seasons aren't capitalized but a lot of people do it anyway (myself included, sometimes).

[Maya & Inka's mommy]

Thanks, this helped me a lot!!
Please pm me if you notice other important mistakes, I would appreciate that VERY much!!

[Rachel]

Oh, it is so confusing, even for those of us for whom English is our first language.

There is a case where a season would be capitalized and that is if it was personified. *Come, gentle Spring, with your blessed showers.* One does not capitalize the names of decades or centuries, unless they are special expressions such as the Roaring Twenties. Capitalize north, south, east, and west only when they designate a definite region, i.e. the Middle West, the Deep South, the West Coast.