About me

Hey, my name is Hoan and I’m $\sum_{n=1}^{8} n + 1$. (do you really want to find it? :trollface:)

Now I’m working for a bank as a network admin. My responsibility is monitor/troubleshoot/setup connections from branches to Head Office. I used to teach CCNA (a Cisco certified about network) at VnPro.

Me at Artinus 3D Museum

I’m a guy with curious mind, so I want to learn new things everyday. It helps me keep up with other people and make my brain always active.

⚡ Check out my learning log!

Image below is letter from Prof. Nguyễn Cảnh Toàn sent to me when I asked him about how to learn math well.

Letter from Prof. Toàn

About this site

Having a website for note-taking is my wish for a long time, but I can not find any free solution is good enough until I know about Github Pages and Simple Perso Theme. Say “Thanks” to Mr. Thi, without his theme and his support, I cannot have this site.

There are no shortcuts to success, but there is always one way shorter than the other. Maybe my notes will help others find their shorter ways.


  • Call for a coffee talk in Ho Chi Minh, Viet Nam.
  • I’m always available to discuss at email.