Effectiveness depends on practice. I will teach you everything you need to know... Then i recommend practicing daily. If someone wants a well trained dog… practice is daily. Make sure training goals are realistic and accomplish. Practice and constancy is everything.
Should I give my dog a treat?
Yes, but...
Not when your dog asks you to, or begs for one.
Don't let treats be freebies, have them do something for it.
Treats should be taken nicely, without a shark mouth.