PerfessorZ's Intermediate SB Tip of the Day:
As long as you haven't maxed out your daily allotment of SB in any given SB phone app, any partially completed playlists will carry over to the next day. This comes in handy if I've hit my 2nd goal for the day, but still haven't finished all the SB apps, or I hit a bonus round of ridiculous quantity (30+ videos). I will watch up to 14 videos, so the next day, I only need to watch very few to get my first 2 SB).
Other times this might come into play: you know you're having a big shop & earn later in the day that will get you to your 2nd goal.
The downside is that you don't truly maximize your earning potential that particular day, but it can be more than worth it if you know you're going to be busy the next day and anything you can do to make hitting your goals easier & faster would help.