I’ve really tried to love Bible study apps like Youversion but I end up feeling like I’m trying to view the scope of history through a keyhole. Bible study seems to be richer and more effective when I use an old-fashioned paper Bible and mark the pages as I go.
Some people take the process of marking a Bible quite seriously, using particular colors and notations for particular things. I tried that for a while but it got confusing. That said, there are a few tips that might be helpful for your study.
Randy Brown gives a bunch of tips on using colors, marking definitions, and starting chain references.
If you want to go full Technicolor, Wes McAdams shares keys on how to color-code your Bible for study.