Samples and Snap grid settings


New Member
Hey guys,
Just got my copy of logic express and i want to get round to making some real simple beats and basslines before i start experementing with synths. Just wondering where i could get some nice free samples from. I wouldnt know how to cut up a break so things like kicks, snare, claps, hi hats etc would be of more use to me! Also im having trouble with the snap grid in logic. Do i set the time signature as 4/4 or somthing higher (4/64)? The reason i ask is that it seems i need more "resolution" to be able to put the samples i want in more places.
Appologies if my explaination is poor,im still learning!

Thanks again