A question, as I am not familiar with bond/bond funds.

Suppose today I buy 10 year treasury bond worth 10K yielding 4.8%. Does this mean

1) As long as the bond price doesn't change, I will get $480/year.

2) Suppose the bond loses its value and it is now worth 9K, but the yield is 6%. Does this mean I will get interest payment of $600/year?

3) Also no matter what the yield is on maturity, will I get back my principle 10K?

What is the good source for a newbie to learn the basics of bond investing?

Thanks...