Explain to me good debt

[Mike Brown]

Hi everyone, 

I'm Mike and I'm an intermediate Internet Marketer.  I recently became interest in Real Estate and thought I come here for some advice on what good debt actually is. I know bad debt are like credit cards you owed to banks and creditors and things like that. I've been a long fan of Robert Kiyosaki's materials and bought some of his books, but never really came to a full understanding of what they are. So I'd greatly appreciate if someone can educate me on good debt. 

I am in bad credit right now, I have $2k school tuition fees that need to pay off and a few credit cards no more than $1k need to pay off. 

My goal is to rebuild my credit but I am clueless and don't even know where to start. 

One day, I would like to buy my first Apartment unit and rent it out to tenants.