State tax filing

My dad had found that article too and I really liked it... except it's too unclear about what this  means for me in getting a 1099. It does sort of define that my W2 work is safe b/c I have no "duty days". But I also had no duty days on my 1099 so why do they get to tax that???

 

I'm at a loss on how to handle this. IF I buy CA tax s/w from Turbo tax for 2017 is the software going to understand how to calculate all this and what counts for what state? Does it mean my GA taxes will have to be redone for 2017 as well?