Pam,
I have a 4 yr old and a 3 yr old. The tantrums are normal. I will say that I have your attitude about tantrums... when my oldest was almost 3 he threw a tantrum in Home Depot. I left him crying there on the floor much to the dismay of many customers and my husband. That was his last tantrum.
My 3 yr old still has them. The funny thing is the oldest says "Lucian if you throw a tantrum, you won't get it anyway" lol.
Hopefully, your daughter will see that she is making the problem worse by reinforcing the tantrum.
As for the advice.... ask her if she wants advice... in a random way. She always has the option to ignore it.