hmmmm l'm the wrong person to be asking, because l make pendants and l don't make beads. You would need polymer clay - l recommend premo by sculpey. Really high quality and doesn't break easily. There are some great books on beading techniques by Donna Kato (polymer clay guru and well known artist) - lf you don't want to buy any then go to your library they will def have books on making beads out of polymer clay.
l don't think it is too difficult - l guess it depends on how fancy you want them
Here is a link to a very good website with tutorials on bead making that l would recommend.
l hope this is of some help. Good luck!