The Cannabis 101 forum in Oroville Thursday brought many for and against commercial cannabis sales in the city. The idea was recently floated as a way to help the financially strapped city. Some argued against it, saying federal law prohibits sales of cannabis in the city. Others argued it was not the financial solution to Oroville's problems. The forum featured Neil Hall from the S-C-I Consutling Group, which works with California cities about commercial cannabis sales.