Establishing good credit

[Noah Wood]

Hello,

I am 18 years old and trying to start investing in real estate, but I am struggling with where to start out? I don't have a established credit so my question is what are some good ways you all use to boost your scores? I plan on getting a few credit cards here soon for expenses like gas and food. I would like to hear some other ways I can establish my score and get it raised fairly quickly so I can have more options with investing! 

Since I do not have credit is their anyway I could still invest? Maybe with private lenders and doing flips? Not sure if that would be the best route as I am fairly new and don't want to dig myself a hole I can't get out've. So please feel free to drop any knowledge you have it would be much appreciated!