Do I use en or ett?
I am confused at when I should use "en" or "ett" when talking in Swedish. I just have no idea when is the proper time to use them. Can someone help?
All Swedish nouns have genders. These are not masculine / feminine genders, but rather purely grammatical genders. Words belonging to the common gender use en, and words belonging to the neuter gender use ett. In fact, we often refer to these as en-words and ett-words, respectively.
There is a great list of en/ett tendencies here (https://www.duolingo.com/comment/6329293) - but for the most part, you'll have to learn which word uses which by heart.
I see that you're also doing Spanish, perhaps it helps to compare them to un and una? It's basically the same thing, but without the feminine/masculine association.
The grammatical genders are known as common (sv: utrum, n-nouns) and neuter (sv: neutrum, t-nouns).
Each noun has a gender, common (n) or neueter (t).
A nouns gender will affect the adjectives, pronouns, articles and cardinal numbers.
ett rött äpple som är mitt
en röd paprika som är min
But if it's in plural or definite, the "plural" form of adjectives and pronouns takes precedence:
de röda äpplena som är mina
de röda paprikorna som är mina