Is Mike Mc's growing board a must have like some folks say? He says he knows everybody there is that will buy all your cuttings,(if you buy his course & growing board) I sure could use some help on finding info like that but not for $600.00.(Thats alot of potting soil) I am just courious about where other people starting out get their info from. I know alot comes from trial and error and thats where alot of mine has come from but hearing tried and true facts from those who have experienced it is nice to have. Thanks for all your experiences you post on here, its great help, keep it up.