Read$/$watch the following chapters$/$articles:Graham, B$.,$ & Dodd, D$.$ Chapters $6-9,$ Security Analysis, $6$th edition. McGraw$-$Hill, $2009($alternatively you can read the appendix of Chapter $12$ PowerPoint slides$)$Charles Brandes: Value bond strategy can uncover hidden gems, The Globe and Mail. May $11,2015$Chapter $24.$ Long$-$term bonds are almost ridiculous at current rates, $2018$ Berkshire Hathaway Annual Meeting

Now summarize one point that you think is important when you are investing in bonds.