For any help post questions in the discussion I will get to you as soon as possible.
Installing a modpack using the Technic Launcher is easy. If you don't already have the launcher downloaded, visit our download page to get the latest version.
Type in the modpack name (Magic dog) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select Magic dog from the list on the left. The launcher will handle everything else!