Still in week 1

I've been trying to get back into the habit of running but haven't had much luck so far. I've completed a few days of week 1 but not on consecutive days. Looks like there are only 3 days for week 1. I am thinking I'm going to need to re-do week 1 a few times until I get more used to the pacing, etc. I also want to run more than 3 days in a week, probably more like 5 or 6. So I guess my questions are:

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1. How should I do extra days during a week? Repeat the days over again?
2. Should I just re-do week 1 if I'm not ready for week 2?
3. Any music recommendations? I have a few songs setup on spotify but could really use some more music to include so I don't get bored of the same set of tracks. I tried skimming through some of the spotify running lists but didn't really care for them.

Edit: Any tips for staying motivated?