How to Check Content Quality after Writing on New Subject?

[offline]

Right now, I am writing content on different topic of eCommerce industry. I am taking help of some useful resources on internet. I never to try to copy and paste from that content. But, I just take it for learning and gain knowledge of specific subject. So, Is there any method which help me to check content quality after writing on new subject? Because, I don't want to make change after make it live on website.

[emma.sophia]

Yes there are so many website you can check your articles by paste your content in the following website...duplichecker.com/

[kathrinefernand]

If you are referring to duplicate content, you can use http://copyscape. Im not sure a way to check if you content is quality since that is all on opinion.