I havent for a few weeks and really like the app!

I have it for a few weeks it took time tofigure it out exactly. I am only able to watch it from my house on the same network. I am not a computer expert. I can access my router but dont know how to set up the router probably to access it from my phone when Im out of the house. Do you have any suggestions? Thank you in advance

LG about uCamPro: IP Camera & Webcam Viewer, v3.1.1