My introduction

Hello. I'm Julio Cesare. Actually I'm studying english for various reason, but the main reason is that the english is very beautiful and necessary. I need friends that help me so much in english and to be friendly also..

english - Always use a capital letter with languages - English

various reason - "various" is more than one (plural) so "reason" must be plural too - various reasons

the english - Again, "english" should be with a capital letter. Also, don't add "the" unless there is another word added - English or the English language

necessary - It's OK, but feels incomplete. Better to add a reason, for example, for my job or for my future. Otherwise, you could just add for me.

and to be friendly also - You can either use "too" at the end of the sentence (and to be friendly too) or and to also be friendly.