The screen shots on the Airnav Acars Decoder page are typical of what messages look like which will also contain weather and performance reports.
Airlines such as BEE, RYR, BMI and other commutters don't transmit on Acars. From my location near EGNM I scan 2 or 3 frequencies to get the best from my Acars set up, using 2 scanners plus an antenna in the loft.
Hope this helps
Regards
Stewart