Today's tips come from "The Chicago Manual of Style:
They are commonly misued words.
ALL RIGHT - Two words. Avoid alright.
ALREADY, ALL READY - The first refers to time (The movie had already started.); the second refers to people's preparation (Are the actors all ready?)
ALTOGETHER, ALL TOGETHER - Altogether means "wholly" or "entirely" (that story is altogether false.); All together refers to a unity of time or place (we were all together at Thanksgiving.)
- The Chicago Manual of Style, 15th Edition, published by The University of Chicago Press