beginners binoculars for astronomy?

Hi, can anyone recommend a pair? I was told to get 10 x 50s, but when I
use an old pair everything is bouncing around like crazy - and I'm sure
my hands don't shake that badly. Is there anything I can do to avoid this?

Also, the adjuster to compensate for differences between the left and
right eye - is this only set once or does it change with the distance of
the object I'm focusses on (I realise this doesn't change with
astronomy, just if I use the binoculars for any short distance work).

Thanks for any help, it's much appreciated.

C.