Well ususally people.. on net do give the strumming pattern... now it depends what strumm pattern u've learnt so far like "blues, rock, kehrwa (for sufi songs usually) etc. etc."
before trying to strum any particular chord , try to find out which strumming fits for the song let's say .. either try to make rhythm using clap, or tap .. and like that and listen to the song carefully to catch the rhythm pattern.. i will say .. since ur a beginner try strumming the songs which are easy and usually fits on rhythms like "rock or salsa" ..
btw u asking the question in the wrong forum..
_________/\_________ .. see ya on the dark side of moon....