First, download the modlist using the button above and save it somewhere easy to find. Open the CurseForge launcher and, if it’s your first time using it, select Minecraft as the game you want to play. Once you're on the main page click "Create Custom Profile" in the top right. 

Next, click the gray "Import" option below "Create Profile." Select your modlist file, and CurseForge will automatically set everything up. Shortly after, a new instance will appear and begin importing the modlist, this may take upto a minute. 

Once the import is complete, hover over the instance and click the large orange "Play" button. This will launch the vanilla Minecraft launcher—click "Play" again, and you're ready to join the server.