IF YOU DON'T KNOW WHAT THE TECHNIC LAUNCHER IS DO NOT LOOK AT THIS OR IT WON'T MAKE SENSE!


The first thing you will need to do is launch the TechnicLauncher.jar file you downloaded. After that, you will need to log in and then click Get More Modpacks on the Launcher. If you have done this correctly, your web browser should open on technicpack.net. On the website click modpacks then browse modpacks. There will be lots of popular modpacks here. To the right of the page there is also a search bar. When you have chose your desired modpack click it. This should bring you to a webpage with information about the modpack. The thing you need to be lokking for is the platform URL you will need to copy this to your clipboard.The technic launcher should be minimized. Reopen it and click Add Modpack. Because the Platfrom url is on your clipboard, just click paste. Now it will confirm you got the right modpack. Just click add modpack on the dialog - this will add it.
When you launch the modpack for the first time it will be a slow start because it will download all the new mods. Startup will be quicker every other time you play.