Outer Perth is an area outside of the suburban sprawl in Perth.
From Perth, use State Route 20, 30, 40, 50 or 60 depending on where in Outer Perth you're going.
The activities for a traveller to do are pretty limited in Outer Perth, but there are some:
Due to the vastness of this area, there's plenty of shops you can find, but the same kind of shop might be far away.
What you want to want really depends on context here. Some areas have more types of certain cultural food than others, particularly a good comparison would be between the south east and north east.
There aren't much bars here
There's not much accommodation here, and you're much more better off staying in metropolitan Inner Perth. Outer Perth can be reached within an hour, but staying in Outer Perth might mean travelling half an hour just for your meal.