Scroll down to See how to set up profile
This tool comes with some popluar mods that you can install. Once you download the file. unzip it to your documents or desktop,
open the folder and run the MineCraftMod.exe. It will guid you step by step on how to install and even launch the game for you.
Once the program has installed forge 1.7.10 for you, Now you have to create a profile to play under.
Click new profile.
Under Use Version Select Release 1.7.10-Forge 10.13.2.1230. Then under profile name, type something like Forge. Now click save profile.
Select your new profile (Forge) then click PLAY.