Here, briefly, is my advice to college graduates seeking to employ social justice and change, and to use their idealism within the economy to earn their own way, make a living, and still change the world "from the inside". If any famous people are planning Commencement addresses and haven't started, feel free to use this.
Twitter is a good utility. I usually praise it for its "search box", you can find breaking insider news if you ignore the "feed" and search for something. Amazing links show up.
Another good thing is that forcing yourself to make a point in 140 characters can make for better journalism.
Here are my 10 Techniques to "Change the world from the inside", something my friends told me would be impossible when I left Fayetteville Arkansas to attend an MBA program in Boston. You can choose something, some industry you want to change, and make a living doing so, and in the process actually alter the way the entire world does and sees things in the industry.
In order (Tweets below posted in reverse order).
Tool #1 Humility.
Tool #2 Math and Secondary Research.
Tool #3 Psychology (including your own)
Tool #4 Networking
Tool #5 Humor (can combine with #1)
Tool #6 Scout Everyones' Perspective (clients, suppliers, regulators, everyone)
Tool #7 Pacing
Tool #8 Statistics and risk analysis and lifecycle analysis (see #2)
Tool #9 History of the field
Tool #10 Be a good citizen.