All the trolleys and bus lines can be a little confusing and intimidating.
I highly recommend spending $2 on your first day and riding the whole circuit of the Pink Line. Probably 1-2 hours. Gets you your bearings.
For another $2, you can enjoy a few hours at the Moana mall (still can’t believe I said that - go to island and visit a mall...). Mall is free, but you pay $2 each time you board the pink line.
Better suggestion (wish I had done this): buy the 7-day pass that allows unlimited trips on all the lines this vendor serves within a 10-day window. Grab a map when doing your $2 Pink line tour and see where other lines covered by this pass go.More