Mercury in Sagittarius:
You possess vision and foresight, and your mind is often occupied with big ideas, plans, and goals for the future. You are interested in what is possible and what is on the horizon, rather than what has already been done. The study of philosophy, religion, politics, or education is of interest to you, and you are more concerned with theories and concepts than with specific applications. You are not inclined to focus on any one practical, concrete area; you find it irksome to deal with details and particulars. You have a gambling instinct and enjoy speculative enterprises and new ventures. Business, advertising, and promotion would be good areas for you also.
Mercury in 5th house:
You enjoy puzzles and other games that challenge you intellectually. You like to show off your verbal or intellectual skills and to use your mind creatively. Writing, dramatic speaking or some other display of your creative intelligence appeals to you.
Mercury Conjunct Pluto:
Suspicious that appearances are superficial and masking the "real nitty-gritty", you are always probing beneath the surface to uncover the deeper, hidden aspects of a matter. You are interested in anything secret or mysterious. You have great powers of concentration and a penetrating mind, with an aptitude for research, investigative reporting, or detective work. You are also keenly observant and seem to have "x-ray vision" regarding the inner motivations and intentions of other people. You could make an excellent psychotherapist, uncovering the deeper causes and roots of a person's emotional problems. You may also be drawn to esoteric or occult studies and the development of unusual mental powers. Stories of mystery, intrigue, espionage, etc. fascinate you.
Mercury Sextile Uranus:
Independent and free-thinking, you dislike being told what to do and how to do it, and you especially do not like being told how to think, for you insist on discovering your own truth. You do well in a rather unstructured environment that allows you to make your own decisions and to respond to the needs of the moment, rather than following a routine, standardized way of doing things. You are also suited to a fast-paced atmosphere, which you find exciting and stimulating. Your mind functions in an intuitive, nonlinear fashion and sudden insights and flashes of inspiration often come to you "out of the blue". You have an aptitude for science and new technologies especially interest you. You also have a penchant for astrology or other esoteric sciences..