Tinkers construct 3 bedrock pc

Is there a good guide online for tic3 bedrock pc somewhere? I keep asking Google, but it's always telling me wrong information. For example, when I asked why there's a diamond cast, it told me it didn't exist. I know it does. I have a golden, diamond cast and an emerald. I'm wondering what the point is. I don't have questions in mind right now to post about, but I like to be able to look things up and I'm having a hard time finding reliable information.