Silver Clay

Hello! Hope everyone had a great Christmas Day! I got some silver clay as a gift which I'm looking forward to using! I've never used it before but have been watching some you tube videos. The videos explain how to heat it etc and tips on this but I'm a little confused as to what exactly you can do with this clay. Am I right in thinking you have to have one solid shape? Some people said it is difficult to solder sterling silver onto it afterwards e.g. like a jump ring or something. Wondered also if it wise to have a mix of fine silver and sterling silver. Anyway, I hope you're having a relaxed Boxing Day and if anyone out there loves silver clay and has any sort of advice/ tips, I'd be most grateful. I'm gonna watch some more Youtube videos and have a play around with it at some point once I figure out what I'm going to make!
Thanks x