A suggestion... if you have the time... Grammar being the most difficult part for most (well that, and new words not in as common use after a point), and while important, sometimes more easily learned partially in use...

Look around and see if there's a place nearby that is in need of volunteers... that has a high rate of Spanish-speaking "clients/members". Also, I *think* that MoCo has a similar program in their libraries... but HoCo has programs (and tutor sessions) for adults to learn English and/or learn to read English... that may or may not put some more practical practice in.

Not all learning has to be from the books ... besides, sometimes people like being helpful when they're being helped.

(and yes, now I'm caught up :-)