If they have white shoots, then they have been kept in the dark or in the shop too long, which will make them shrivel up.
Through away any that show any signs of rot, but otherwise they should be OK.
Remove from the packet, remove any long shoots and place then somewhere cool and light, north facing windowsill is best.
'Beautiful Garden' sounds like it is from the pondland or 99p shop, but that is not important, it should say what variety on the packet.