Hi with my lab when she pulled on the lead I turned and walked the other way, keep doing this when ever she pulls and eventually she’ll learn she gets nowhere if she pulls. With jumping up at visitors what i did was when she jumped up I calmly said no and led her into another room then let her out after a few minutes, then just keep repeating it until she learns not to jump. My lab now sits when a visitor comes in and only sniffs and wags his tail when i say "say hello" 🙂