Sorry if this is a common topic, but I didn't see a sticky and Google has failed me. I'm thinking about taking a look at FTB in Eclipse, and perhaps trying my hand at a little experimentation. I've created a couple of minor mods for Vanilla Minecraft with the MCP in the past, and am comfortable with all of that. I'm curious about the process of creating mods specifically for FTB, or mods that are dependent on other mods (such as Extra Bees which is dependent on Forestry). Is creating a mod that's compatible with FTB simply a question of using Forge? If I wanted to expand on an existing Mod would I need that mod's source code, or use a specific API for that mod? Where could I find an official FTB repository that I could fork off of?