I know the feeling.
I started with Sonar 6, and am still learning every day. I read books and watch videos etc. every day, as well as working at my DAW, and still learn something new all the time.
As for mixing, I highly recommend Roey Izhaki's "Mixing Audio" and Mike Senior's "Mixing Secrets". I read and re-read them constantly. Scott G's "Sonar Power" books and great, too.
It seems to be a never ending process. I have spent most of my professional life in and out of studios as a musician, but never really got involved in the technical side of recording much. Starting up my own modest project studio has been a real eye opener. There is SO MUCH to learn.
I look forward to hearing your new album, post back when it's done. Good luck with it.