My first day in on this webside website

Hi for everybody.
It's my first day in on this web site and it's very interesting.
I like talking with other persons people in English. I need to practice all of these: writing, speaking and listening.
I'm I've been studying English for 4 months but I studied French 4 years ago.
Thanks for the corrections.
See you =)

The first sentence is okay. The second is a bit awkwardly phrased. A few better ways to word it could be: He'll never be forgotten because he is the first to ever do this. He'll never be forgotten because he is the first to ever do so. He'll never be forgotten because he is the first to ever [insert what he did]. In my first two examples, make sure what he did is very clearly stated in the previous sentence.

I am at the Starbucks

Today is the Dragon Boat's holiday in China. I have no friends to hang out with and nothing to do.
I'm just staying at the Starbucks nearby my home, hanging out with my computer.

Filial piety

As is known to us all, filial piety is the base code of ethics of ancient Chinese society. Since ancient times, Chinese people regard filial piety as the base of personality, family harmony and national safety and health. Filial piety is the core of Confucian ethics. And for this contributor, it has become the moral criterion for maintaining family relations in Chinese society for thousands of years. Undoubtedly, it is a traditional virtue of the Chinese nation. Filial piety culture is a complex concept which has affluent content and involves a wide range. Additionally, it does not only have cultural concepts, but also has institutional etiquette. Generally speaking, it refers to the social requirements of children to parents, including respect, care, support for the elderly and so on... In brief, filial piety is the root of the old Eastern civilization.