Here is the link
http://web.ku.edu/~idea/special/genam/genam.htm
which archived a group of experts in voice coaching for actors and actresses reading the same sample text: Comma Gets a Cure, to give people a feel of diveristy of General American Accents.
If you have time to listen to each of them, you could master how each of them handling intonation, word linking, and word stresses.
I have thought for a long time if there are a few rules in word linking for us to follow. After I listened those experts rendering of the same text, I realized that there is no rule to follow. As long as a coherent word group is kept together, you can read a long sentence in one breath, or pause at the end of each thought group. Comparing several experts' reading, the one with more pauses are easier to comprehend than ones with less stops.
The website also documented a lot of non-experts reading the same text. You might search one near your location to see how they sounded in reading this text. It might boost your confidence of your spoken English dramatically.