What kind of credit do you need to start investing?

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Hello everyone, I am new to real estate investing and realized the importance of having good credit. However, I just got my first credit card and have no previous credit history. I am currently in college and won't have the capital to invest until after I graduate next spring. I am curious how long you need to build credit for and if there are strategies to increase the pace at which I can build credit?
Thanks so much in advanced!

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@Eric James Thanks for your response! I am planning to save more than 20% of my income and hoping to start investing in real estate a lot sooner than several years after graduation. Ideally by starting with a house hack. Is this just not possible without several years of credit built up?