-Read everything, more, forever. Never stop reading. Not just here, not just fiction, read everything. Read a constitution. Read a medical dissertation. Read a cook book. Read everything, more, forever. Never stop reading.
-Read everything you write aloud when proof-reading--even better, have a partner read what you've written aloud to you, and do the same for them. This works on a lot of skills at once.
-Listen to readings. Poetry, spoken word, anything.
-Write things. Write shitty things, write things that turn out good. Never stop writing. Write forever.