Before you summarize, please pick 5 things that you learned (form 1 to 5 lines each) from these sources that will help you in the future. – this will evolve into the summary.
Make sure those 5 things have the right amount of information and are clearly written.
1 – https://www.forbes.com/sites/forbesfinancecouncil/2018/10/25/what-percentage-of-small-businesses-fail-and-how-can-you-avoid-being-one-of-them/?sh=3baa7b9b43b5
2 – https://courses.lumenlearning.com/boundless-management/chapter/small-business-owners-a-profile/
3 – https://www.businessnewsdaily.com/7398-startup-mistakes-to-avoid.html
4 – https://www.nytimes.com/2007/11/20/business/20practical.html