Ribbons. Which should come with the book, and can also be purchased separately.
It takes a bit of effort at first, but you will fall right into it. I’m of the camp that would prefer to ditch any app in any shape or form and stick with the dead-tree edition.
Mark the following pages with ribbons.
Proper of Seasons (currently, Second Week of Easter).
Ordinary (before any prayer, stick the ribbon in the Morning Prayer or Evening Prayer section so that you can easily flip to it during the prayer)
Four-week Psalter (currently Week II)
Night Prayer (appropriate day)
Proper of Saints (appropriate day or nearest to it)
And if you’ve likely run out of ribbons, stick a bookmark or card into the section called Commons, and one more into the Hymns, probably around hymn 116 this time of year so that you can easily find your place in the Easter hymns).
Then the first thing you should study before attempting to pray for the first time, is the Ordinary. Read and familiarize yourself with everything printed in both black and red, but pay attention to the red, because they are instructions. The Ordinary gives you the daily order of prayer, which doesn’t change. What changes are the texts, but the red instructions clearly tell you how.
Many of us here started the Office and a lot here would tell you that once they got into the rhythm of daily prayer, we couldn’t give it up. It became an “addiction” of sorts, but one we are only too happy to stick with.