As you can see, I am having some trouble with these tanks...and some fun..

I was reading the instructions and really don't see the slot to put the smoking oil into. I see the two plastic tubes which I assume are the exhaust pipes..where is the input for the oil?

Thanks so much for your help on this board. I have asked some dumb questions but you all have been very helpful and supportive. I am excited to be part of the Tank community and hope to help out others as I get more experienced!

yes ,it is the exhaust tubes .
from the rear, it is the left one for the re-fill