A career in shares and graphics can be pursued at any point in time if you have the interest and the skills-set.
In order to read up graphics log on to http://www.youngbuzz.com/careers/careerdetail/graphic-designer
And http://www.youngbuzz.com/careers/careerdetail/study-stock-broker will give you information on career in stocks.
You will find the career scope,opportunities,career map,benefits,remuneration etc all of this on the above links.
Hope this helps.