Can you speak any Polish now then ?
I started by asking how to say this or that, then mimicking what I heard, then trying to piece things together, often havin gmy grammar corrected. Swearing and being (jokingly) offensive was my strong point, along with asking my colleagues to go there, sweep this, tie that up...
So I was speaking some Polish before the book(s).
Have the books helped you to improve ?
A bit. I've gone over lessons 1 to 5 in the better one of the book quite a few times. I have found that any book will be better used in combination with trying to actually use the language as well.
But the honest answer is yes, but only a bit. That's more of a reflection on the effort I have been putting in for the last couple of months.