aAn obssession callingabout history

Since iI was a child, i wasI have been obssesd about castles, princes, kings, queens, and all aboute thistheir livfe style.

When i start grow upI became older, this obssession startsed going to another way, when ia different way, as I started to study about this in school, so iI started to see this subject in a anotherwise way.

For me, everything it's cover the subjects History, havethat has to do with history grabs my attention, but specifically, the history about royalty.

I love everything about lLady Diana, eEmpress Sissi, thé Victorian era, and so muchany things about the history about bof the British rRoyalt Family.

I haveam 15 years old, and iI want to learn eEnglish now to have a great future beeing a law,yer and and travelling all over the world.

Since iI was a child, iI was obsessesd aboutwith castles, princes, kings, queens, and all aboute this live festyle.

When iI started growing up, this obssession startsed going to another way, when iI start to study about this in school, so iI start to see this subject in a notherwise way.

For me, everything it'sthat covers the subjects History, haves my attention, but specifically the history about royalty.

I love everything about lady Diana, empress Sissi, Victorian era, and so muchany things about the history about bBritsh royalty.

I haveam 15 years old, and iI want to learn eEnglish now to have a great future beeing a lawyer, and travel all word.

a obsseAn Obsession cCalling hed History

1. A rule to remember: when a word starts with a vowel (a, e, i, o, or u), then use "an" rather than "a"

SEver since iI was a child, iI was obsessesd aboutwith castles, princes, kings, queens, and alleverything aboute thisat live festyle.

I think "ever since" is better than "since" in this case, because you are describing something that

When i startAs I groew up, this obssession startsed going toin another way, wdirection. When iI started to study about this in school, so i starI began to see thise subject in a otherwisenew way.

Saying that you "started to [verb]" so frequently is not needed. Here are some alternatives that will help your words flow more naturally:
A. "When I started growing up" -> "As I grew up"
B. "this obsession started going in another direction" -> "this obsession evolved" OR "this obsession changed direction"
C. "When I started to study" -> "While I was studying" OR "As I was studying"

For me, everything it's covern the subjects H of history, haves my attention, but especifically the history aboutof royalty.

1. There is no need to capitalize school subjects (with the exception of languages).
2. "especially" or "particularly" is a better choice than "specifically" because you are pointing out something you like more than usual.

I love everything about lLady Diana, eEmpress Sissi, the Victorian era, and so muchany things about the history about bof British royalty.

1. Capitalize noble/royal titles when they come before someone's name (Queen Mary).
2. The word "royalty" does not need to be capitalized in this sentence. However, if you write about the "Royal Family" then you would capitalize :)

I haveam 15 years old, and i. I want to learn eEnglish now to have a great future beeingas a law,yer and to travel allthe whole world.

1. Remember to always capitalize "I" in English. This is a difference between English and Portuguese (where "eu" is not capitalized).
2. Always capitalize the names of languages.

aAn obssession callingwith history

Since iI was a child, iI was obsessesd aboutwith castles, princes, kings, queens, and alleverything aboute this live festyle.

The word "I" is always capitalized.
Obsessed about -> obsessed with.
Lifestyle is one word.

When i startI groew up, this obssession starts going to another way, when i start to study about thised to change as I began to study it in school, so iI started to see this subject in a otherwisedifferently.

start -> started because you're talking about actions in the past.
start -> began to avoid repetition.

For me, everything it's covered by the subjects H of history, haves my attention, but specifically the history aboutof royalty.

You could also say "especially" instead of "specifically" but both are fine.

I love everything about ladyPrincess Diana, empress Sissi, the Victorian era, and so much other things about the history aboutof british royalty.

She's most commonly called "Princess Diana".

I haveam 15 years old, and iI want to learn eEnglish now to have a great future beeingas a lawyer, and to travel allthe world.

To say your age, you can say "I am 15 years old" or in casual conversation just "I'm 15".

a obsseAn Obsession cCalling hed History

In English, all words in a title are capitalized.

Since iI was a child, i wasI have been obssesd aboutsed with castles, princes, kings, queens, and all abouteeverything related to this live festyle.

When iI start growing up, this obssession starts going to another way, wevolved. When iI started to study about this in school, so i starI began to see this subject in a otherwisedifferently.

For me, everything it's coverrelated to the subjects of History, have my attention, but specifically the history about royalty.

I love everything about lady Diana, empress Sissi, the Victorian era, and so muchany things about the history about bof the British rRoyalty.

I have am15 years old, and iI want to learn english now to have a great future beeingas a law,yer and travel allling around the world.