Buy and Hold Advice

[Shanai Inns]

So, I will soon be closing the deal on my very first investment property. It's a duplex and I am super excited! 

My plan is to continue to buy and hold properties while doing some wholesaling on the side. I have been researching the best way to buy and hold properties without having to to take out loans. It's not that I am against loans, but I am not sure that I will qualify for that many loans because I am only 21 years old. While doing research, I came across the idea of buying properties "subject to". Does anyone have any advice about buying "subject to" properties?

Any advice is greatly appreciated.