You must be a Post graduate in Mathematics if you want to learn to find out whether a planet is benefic or malefic and what is its strength. And you have to learn the fundamentals of astrology and how to calculate the shadbalas, bhavabalas, residential strength and Ishta and Kashta Phalas which will take months to understand. Read my blog navagrahastro.blogspot.in and come through Paid Services if you are interested to your horoscope evaluations.
Mr. TMR has advised you correctly, follow accordingly.
See in your case, you have given your name as astro_student. That means you are not interested to be open in the public. Is it good or bad? It depends on the nature of the person and situation to exhibit. Like wise the planets give the results according to the placement, situation as per their nature and ownership.