https://www.italki.com/question/57162?hl=ko According to this, "예" is just a little more formal, but they're basically synonyms

예 is a more formal way to say yes than 네.

Not much!

I think they're pretty much interchangeable. I think 네 seems slightly more formal, though I've heard both used in formal situations.

I have a feeling they're the same. It's probably up to you what you wanna use.

Theyre just two different ways to say yes. I believe "네" is more formal and "예" is more common

No it's like an "a". It makes the statement general. "A" bread is food.

Yes I also confused, examples earlier, said 빵 + 이, I don’t know when we use 이 atau 은, help please?

I believe that 은 is "is"

Typically, yes! Korean syntax is SOV; subject-object-verb.

I think that you could do that, grammatically, but it would sound less natural than using the topic marker -- but I'm not sure!

입니다 means to be so in this case "is".

Is it a subject particle?

Ye, bang-eun eumsig imnida