Hello Grace,
As far as career goes common places to look at in the chart are particularly the MC, then the 10th, 2th , and 6th house all in general. Look at the signs on these cusps to start and you can also look at the planets in those houses.
A good long look at the ruler of the MC (Venus in your case) can be very telling!
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But, for example, another perspective on matters of which concern your career could look at, say .... any planet that falls in your tenth house.
So...
Mercury 2 Scorpio in the 10th ( ruled by Mars. )*
(In this case Mercury will be influenced by Mars' placement. This is because Mars is, traditionally, the ruler of Scorpio and will contribute to the unfolding of Mercury's energies when he is located in Mars' home. Mars must be considered when interpreting a planet that falls into the sign of Scorpio. You could look to Pluto too, the modern ruler of Scorpio, in order to get something different and would yield important elements as well.)
Mercury has to do with all forms of communication. A career that allows for you to read, write, and talk are indicated by this. It would be favorable for you to be doing these things with and around other people. Mercury also has to do with the mind and curiosity. A career that allows for you to routinely move around from one task to another (both mental and physical movement) would be a great outlet for these energies.
A typical Scorpio Mercury character trait is "x-ray vision". Mercury in this sign position has ease to see right through things. Native's get to the core of the issue at hand. A career that would allow for you to take part in investigative research is an example of this--Even more so if this can be done in a way that contests the status quo as Scorpio also transforms things! Scorpio is also about shared resources and money. So The economy and stock market can be of interest. Mercury also rules money and commerce.
If all these things still seem to be questionable career paths you could look at a whole other side of Scorpio. Scorpio is also the shaman. Many people who have the modern ruler, Pluto, in aspect to their luminaries or other varying important points of focus like the angles end up working in the healing arts. Whether it is a psychotherapists or a person who maintains a sweat lodge, the archetype of going deep into the realms of the unconsciousness are notable themes associated with Scorpio. This is just a different outlet for the x-ray vision.
This can be done with other planets giving you some interesting images to add to the whole picture
Getting into aspects and other more finer details with time will reveal even more.
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*Mars in Cancer is on the Dsc (the archetypal location of Libra) and brings the Libra energies back to the table w/r/t to your stellium in Scorpio in the tenth. Mars is disposited my the Moon which is also on the Dsc.
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I find the the most important but subtle thing for a career path is the Sun.
If the rays of your Sun can easily shine through your career then it should be smooth sailing !
In your case, the Sun is in Libra in the 9th house. This would suggest that a career path that allows for you to participate relationships (air), particularly one to one (Libra), and travel long distances (9th) would be great. Maybe this energy finds better outlet in your journeys of the mind (9th) so to do with the higher education institutions, like teaching at a university rather than traveling but it could be both. All this energy is further intensified by the fact that your ruling planet, Venus, is conjunct Jupiter in Scorpio. Jupiter brings the long distance travel and philosophy back into the equation.
I also like to think that "where ever you are then there you'll be" philosophy. So when it comes to jobs, I feel that we will bring all our energies to the table no matter what the job is. Your energies will find proper outlets, or course, given the right conditions
I hope this can give you some insight for looking at a chart for career opportunities.
best
Nathan