I had been in web development for many years,either HTML ,JS or PHP , LINUX,even load balance using nginx proxy,all that I know.

As for Js,such as angular js,vue js,ionic,socket io,node js,I have much experience for them all.

Now I use react native to build ios app.

As for php,such as thinkphp 3.2 or 5,laravel,yii,CI,all of them I learned before.

I am in company is a CTO,as a full stack engineer,for linux,web server auto scale to accept more web traffic,I also know that.

As for python,I use it to write many scripts when I need it to complete some tasks.

Sure,it is for linux tasks,such as cron job,or server communication 

middleware.

Python could finish almost all tasks you can think of.

For my courses,the most feature is that I am a self-learner by myself,so I know what problems you will encounter when you first learn a new skill.

For now,I know all programing language is most same,such as "variable,sentence if or for,oop" and so on.

You will get what you want to have if you have patience for my courses.

I will teach you how to get all these skills in real coding,I will finish all courses without any prepare,having interest in knowing a new skill is all that required for you.