Aloha!
As for now there is almost no tips with the Duolingo course.
Thankfully useduforce has made a series one guides for each topic.
Its on a place called Aminoaps, it's possible to read the notes without creating an account.
Amino works slightly better on a mobile device.
#1: Intro
#2: Determiner
#3: Greetings
#4: Polite Expressions
#5: People
#6: ‘Ohana
#7: Weather
#8: Household
#9: Likes
#10: Food 1
#11: Numbers 1
#12: Dates
#13: Time
#14: Food 2
#15: Directions
#16: Leisure
#17: Purchases
#18: Order Food
#19: Habits
#20: Determiners 2
#21: O and A
#22: Home Life
#23: ʻOhana 2
#24: Social
#25: Numbers 2