Day's of the beginner course

Hey

so, i'm on day 2 of 30 day singer!  super excited.  my goal, to be able to sing a song in front of others while playing guitar and be able to hold my own and hold a tune!  anyway, question, i just finished day 2 and at the bottom of the page is 16 other 'day 2's'  totalling another 2 hours of practice., what are these for?  to do additional practice?  how much do you recommend at the least?  I have 1-2 hours of guitar each day and don't think i can do more than 20-30 minutes a day

Those are the exercises from the lesson, in different vocal ranges. You can download them and use them for your warmup, rather than watching the video again. Find which range is closest to yours here: 

Find your vocal range in 4 minutes: https://www.youtube.com/watch?v=ArVkyaMQiSI

Use this article to identify the vocal range you're closest to: https://www.30daysinger.com/blog/finding-your-vocal-range