I've never brined a joint but regularly use it for pork chops and chicken breasts (although I now prefer to marinade the latter). I took my guidance from this link...
All About Brining. For 1 litre of water I use 60 g salt (4 tbsp) and 30 g sugar (3 tbsp) plus thyme or a bay leaf etc as available.
I usually brine at room temperature but refrigerate if going for overnight. Personally I don't mind if I get a taste of salt from the process as it's never been too much and all I have to do is remember not to add any more to the dish once it has been served up.