No problem.

Although you've not got a printed manual, the disc should have the manual in PDF form.

I think you could even buy just a printed manual from Adobe (or ebay) if you wanted the physical tomb; but as you say, there's always books like Photoshop for Dummies and the Classroom in a Book series.

But I would give the PDF manual a quick browse through the first few chapters too so you can get a feel for some of the rudimentary commands and functions. I know the Classroom in a Book series tends to need you to be familiar with the opening, saving and general tools first.

...and I would stay away from my tutorial until you're feeling like you're at an intermediate level - it'll only over complicate things otherwise!