Try this resource....it is one of the best for explaining the basics.
Investopedia - Bond Basics
And confirming what drsmith said above:
- bonds are highly liquid in that they can be bought and sold before their maturity date.
- people won't invest in bonds unless the return (interest paid and final repayment of the bond face value) is as good as putting it in the bank or other low risk investments.
- therefore, bond yields follow the overnight interbank cash rate
- for the yield to go up, the value of the bond has to go down, and vice versa.
- so the interbank cash rate is inversely correlated to the price of bonds. when the rate is high, bond prices have downwards pressure applied.
- however bonds roll up into maturity every month, according to their maturity date.....and a bond closer to maturity won't be as sensitive to the cash rate as one that is further from maturity.
Why? It is all about the % return expected from all cash flows associated with the bond i.e. all interest paid over the remaining period and the final payout (fixed face value).
Finally, I'd encourage you to continue with a concerted study of the bond market. Stocks, funds, and commodities are not as reliable as bonds for predicting where the smart money flows, ergo what the future holds. Traders of bonds deal with massive amounts of capital for governments, sovereign wealth and pension funds, and very wealthy sophisticated investors.....Bond traders are the cream of the crop as far as analysts and traders go. They have access to much better research than your average equity fund or stock analyst.
Following the bond market will reveal where the smart money is going, and give insight into many country's economic outlook.