Looks like two fermenting buckets. Maybe I planned to make twice as much. Thanks for the respond. Any tips on good ingredient kits

i brewed one batch of porter about six years ago- had two kids and packed it all up. I just recently got the bug to start brewing again. Pretty sure I have everything. Nothing fancy. Trew Brew beginners kit but why do have three buckets? Hmmm I will go through and clean everything- check for...