Hi and welcome!
House training with any dog is the same boring work... with an adult it usually takes less time than a puppy because their bladders are able to hold longer, but honestly, it is absolutely necessary to watch, leash to you, crate or outside every second until you have a dog who consistently asks to or goes outside. Every time you mess up, it prolongs training.
http://www.clickerlessons.com/index.htm Has training on left, behaviors such as house training on right.
Another good one:
https://positively.com/dog-behavior/nuisance-behaviors/potty-problems/adult-dog-housetraining/