There are several online sources that provide free access to reading material and other content that can be useful when studying for an MBA. Here are a few options to consider:

1. Open Educational Resources (OER) – OER are educational materials that are freely available for anyone to use and repurpose. They can include textbooks, lectures, and other course materials. Some popular OER websites for business and management include:

• OpenSesame: A collection of online courses and resources for business, management and more
• Bookboon: A platform that offers free textbooks for business, economics, and engineering students
• Open Textbook Library: A collection of open textbooks for business and management courses

2. Online Libraries – Many universities and libraries provide access to a wide range of online journals and databases that can be used for research and studying. Some popular options include:

• JSTOR: A digital library that provides access to academic journals, books, and primary sources
• Project MUSE: A digital library that provides access to scholarly journals in the humanities and social sciences
• ProQuest: A database that provides access to academic journals, dissertations, and other research materials

3. MOOC Platforms – Massive Open Online Courses (MOOCs) are free, online courses that are open to anyone. They can be a great way to supplement your MBA studies, and some popular platforms include:

• Coursera: Offers online courses from top universities and organizations in a variety of subjects including business, management, finance.
• edX: Offers online courses from universities and organizations around the world, including business, management, and economics
• Udemy: Offers online courses on a wide range of subjects, including business, management, and entrepreneurship.

4. Professional associations and organizations – Many professional associations and organizations offer free resources, such as white papers, case studies, and research reports, that can be useful for MBA students. Some popular options include:

• Harvard Business Review: Offers articles, research, and case studies on business and management topics
• McKinsey & Company: Offers research and insights on a wide range of business and management topics
• The Economist: Offers articles and analysis on global business and economics

It’s important to note that while these resources are available online and are free, they may not be directly aligned with your specific MBA program or the curriculum of your university. These resources should be used as an additional material to your main course readings, and should be evaluated for their relevance and reliability to your program and coursework.

Overall, there are many free online resources available that can be useful when studying for an MBA. These resources can help supplement your coursework, provide additional information and support, and even add a new perspective on the topics you’re studying. Remember to be selective and consider the credibility of the sources before using them for your research or studies.