I am programmer and co-founder of Wahsidin. I have been programming and build many complex applications for years. and had written full and complete documentation for years  from 2011. By based on my teaching and writing skills, so i have the ability to simplify the complex topics into an easier chunky algorithms ( steps ) for anyone to really well understanding the topics. In order to share my knowledge widely with other software engineers, I decide and become part of Udemy Instructor. So, if you interest with my course, then, come and join Wahsidin published courses.