I apologize for the likely trivial question but I am running into a wall as Google gives me the same non-applicable answers over and over.
I am trying to set a breakpoin
breakpoint set has an address option; you would type help breakpoint set to see all of them. For your specific example,
breakpoint set
help breakpoint set
(lldb) br s -a 0x10000
(You can always use shorter versions of command names in lldb that are unambiguous so typing out breakpoint set isn't necessary)