General Cooking Questions

Hi Jacob, 

Couple questions here, this past summer I've smoked pork spare ribs several times, I got a nice recipe for a rub that I really like. It makes me wonder, this rub has a decent amount of salt, doesn't that draw moisture from the meat? also your roasted potatoes, they stick to my pan, am I not tossing them in enough oil? or should I pre heat the roasting pan in oil? or am I trying to move them too early? thanks. Eric