I've just switched from mac to windows and have just started using TeXworks. I like it, but I find that the default pdf viewer is difficult to use. For example, there doesn't seem to be a key command for going to the bottom or top of the current page; I can't view pages continuously; spacebar does nothing for navigation; and trackpad functionality appears to be broken (scrolling with the trackpad causes the pages to jump around in a seemingly random fashion). Is there a list of key commands somewhere? Or is there a way of using a different default pdf viewer?
Since using a different viewer is an option, I'll add how I do it.
First, I disable the "automatic preview":
Second, I use an external PDF viewer that can work with PDF files being updated. For linux, Acrobat works this way, in Windows it does not AFAIK. You can use for instance SumatraPDF.
Some might say that it's annoying, but I like TeXworks, and sometimes I even use the internal viewer. This is when I make only a small change in the document. The good zoom feature of the TeXworks viewer makes it very fast to check that the correction was successful.
In preferences -> general -> untick open corresponding PDF preview with TeX files will not open the internal pdf viewer when you open any .tex file. Interestingly, I find windows 7 does not like two instances of the same program opening at the same time so have to use sumatrapdf as well.