Hello, as you may have noticed I'm Ariom and I'm learning english.

Hello, I'm Ariom. As you may have noticed, I'm learning English.

I study english since a early age and have completed my course recently 

I have studied English since an early age and have completed my course recently,

having nothing left to do but actual person to person interaction.

having nothing left to do but actual person to person interaction.
As it may appears, I speak portuguese. However, isn't the same as Portugal.

It may appear as if I speak Portuguese; however, it isn't the same as in Portugal.

You see, I'm a brazilian therefore my portuguese has some differences

You see, I'm Brazilian; therefore, my Portuguese has some differences.

, long story short, it's kind of the same thing between US-UK english.

Long story short, it's similar to the differences between US and UK English.
I'm engaging on the graduation of philosofy, 

I'm embarking upon the study of philosophy. 
consider myself a poet and musician.The rest is to be found out.

I consider myself a poet and a musician. The rest is to be discovered.