First notebook entry: Introducing myself

My name Svetlana.
I live in capital Repablic Tatarstan - Kazan.
Kazan is very-very big tawn.
Ia am shef department HR.
I like write book for children.
I have 2 books - fairy tall.
Many children reading my books.
I like fitness, travelling, musik.

I like travelling , bekous i want learn English for dialog.

Correct English: 

My name is Sventlana. 

I live in Kazan the capital of the Republic of Tatarstan. 

Kazan is a very large town. (might want to use city instead of town)

I am the chief of the Human Resources department. (I'm guessing this is what you meant)

I like to write books for children. 

I have two books written thus far, they are fairy tales. 

Many children are reading my books. 

I like fitness, travel and music. 

I like traveling because I want to learn English for dialogue. ('for dialogue' should be replaced with 'so I can communicate with others.)
hope this helps I am guessing what you meant though so take it with a grain of salt.

First notebook entry: Introducing myself

My name is Svetlana.
I live in the capital of the Republic of Tatarstan - Kazan.
Kazan is very, very big city.
I am the head of the HR department at my company.
I like writing books for children.
I have 2 books -- they have been fairy successful.
Many children reading my books.
I like fitness, travelling and music.

I like travelling, therefore I want to learn English to improve my speaking.

First notebook entry: Introducing myself

My name Svetlana.
I live in capital Repablic Republic of Tatarstan - Kazan.
Kazan is very-very big tawn town.
Ia am shef H. R Chief department .
I like TO write (like writing) bookS for children.
I have 2 books - fairy tall tales*.
Many children reading have read my books.
I like fitness, travelling, musik music*.

I like travelling , bekous because (cos/ cuz) i want TO learn English for dialog communication.