My entire instagram explore page is pornographic.

🙏 Goon But Not Forgotten: Vigil held for man that committed suicide after sexually harassing and jacking off in front of bikini baristas 🙏 🤮🤮🤮

Can someone quickly explain the difference between Stereo Output vs. Bus Output vs. Send Bus? When would I output to bus instead of Stereo? Are sends only for parallel effects? If I have a group of tracked guitars, should I output all to Bus? Or Send?