Could you maybe just write about everything you did to do well in LS, get a clerkship and a PI job?
Sure. Interestingly, clerkships and PI jobs are very different animals. With clerkships, there is usually no shortcut (unless you are just very lucky in who you know). If you are just applying blindly, you will need good grades, preferably law review but definitely some meaningful journal work, and strong recommendations from professors. If you can get a professor to call, even if they don't know the judge, that will help a lot.
Public interest is usually less grade focused (its hard to generalize though, some public interest jobs will require top grades (NAACP LDF, DOJ, some quasi-public interest law firms). The key to getting those jobs is establishing a strong commitment to the field. Do internships, pro bono, etc. Those things will probably matter more than your school or grades (within reason). Finding a professor who has worked in the field, or even better, for an organization you are interested in, is helpful because they will have lots of contacts.
In terms of doing well in law school, my theory is there generally isn't a substitute for (efficient) hard work. At a "top" law school, most of the people around you will be very smart, and my anecdotal experience is that the top people are very disciplined and put in a ton of hours. The thing I didn't realize until later in LS, though, is that its very important to be smart about how you work. Make sure that you are understanding the material as you learn it. After every class, it is helpful to spend a few minutes jotting down maybe a paragraph about the material you covered. Similarly, if you can keep a list of cases with a sentence or so describing the holding, that is helpful. This helps you keep the big picture in mind. (It's not a substitute for doing all the reading and having a comprehensive knowledge, though)
Also, practice exams are key. If you are committed to doing well, you would be crazy not to take practice exams for each class you're able to. Many professors only vary there exams slightly each year. You get a feel for how the material is presented in question form, and it's really invaluable.
Aside from working hard/smart academically, I would recommend getting to know professors. They typically have a lot of connections that will be very helpful to you. The best ways to do this are taking seminars, doing research for them, and having them supervise research/writing projects of yours.
I am curious what rank school you went to and regret any decisions you made in the admissions process ?
I am at a school ranked in the top 10 or so. I don't have any regrets (other than, around finals time, having applied at all). However, I do have a different perception now then I did when I applied. I was firmly a "highest rank school you get into" advocate, and paid sticker for my education. Now I am less convinced that the school you go to matters very much (within a certain range). I don't think taking a full scholarship to a top 20 school, rather than going to Michigan, for example, would be a bad idea. This may not be the case for people looking at big law firms though.
Do you have a job lined up upon graduation?
I will be clerking, but I don't have a job lined up after that. That's the nature of public interest, I guess.
Any other questions?