Allow me to introduce myself.

Hello. I am Hiro from Japan.

[ I have learned English since last October I want to speak English.] can be written instead as:

Because I want to speak English, I started to learn it last October.

or I have been learning English since last October because I want to speak it.

My hobby hobbies are playing baseball, basketball, and reading comicbooks, and listening to the music.

[ I am going to go to USA from June. ] can be written instead as:

'I am going to the USA from in June.' 

or 'I will go to the USA in June.'

or 'In June, I will go to the USA.'

I need to study English more hard.

or To be good in English, I need to study harder.

[ It is fun for me to study English. I like English. ] can be shortened to

[ It's fun for me to study English, because I like it. ]

If When I can already speak English , I want to talk with an English speaker.
('If' is a condition, 'When' makes it sound like a statement! Go for it! ^^ )


[ I have question. I wrote introduction. but I wrote a lot of "I's". For example,
I am--- I am--- I am-- Is it Ok? ] This can be written instead as:

[ I have a question. In my introduction, I used a lot of "I's" in my sentences. Is that OK? ]

That's looks BAD.
Please teach me!

I have included many options for you to choose from. I hope I was able to help! :) Good luck in learning! Let's learn together. :D

Please let me introduce myself.

Hello.
I am Hiro.
I am from Japan.
I have been learning English since last October.
I want to speak English.
My hobbies are playing baseball, basketball, reading comicbooks, and listening to the music.
I am going to go to USA from June so I need to study English more harder.
It is fun for me to study English because I like English.
So I can speak English , I want to talk with an English speaker.




I have question.
I wrote an introduction.
but I wrote a lot of "I".
For example,
I am---
I am---
I am--

Is it Ok?
That's looks BAD.
Please teach me!

よろしくお願いします！自己紹介だからよく "I"　を言ってもいいと思います。でも、2つの文章を結合するためにときどき "and" "because" "so"を使った方がいいと思います。例えば "I am Hiro and I'm from Japan"　は大丈夫です。

(I hope that makes sense. sorry if my Japanese is wrong!)