We are small group of people who collect insightful information from many sources. We aware that some of them are have copyright, but we still did it anyway because our goals is to provide people with valuable information that maybe they didn't know before.
There are millions of website and thousand of them are sharing valuable lesson, tutorial and information, its hard for single of people to collect them from different sources, so our job is to collect it for them.
We will put original sources on our articles, but if you still didn't pleased with what we did, you can request us to delete the articles, our contact information are available in Contact pages, feel free to reach out!