Forge and How-to sites

Mods
vivliotheca.com/mods/

Forge: (If you have not already installed this, you will need to to get the mods to work)
http://adfoc.us/serve/?id=27122860294024

How to Sites
http://www.howtogeek.com/202633/
http://www.minecraftmods.com/how-to-install-mods-for-minecraft-forge/

for mac users how to:
https://www.engadget.com/2014/03/25/the-ultimate-mac-users-guide-to-minecraft-on-os-x-mods-skins/