Take ANYTHING SIMPLE to start, but GET PAID UP FRONT! The many issues here with being unable to predict taxable income, getting clients that scream to the ethics board, etc. A lot (but not all) can be staved off by getting your retainer agreement down pat and requiring payment of at least 65% of your fee upfront... This DOES mean that you will stick to simple stuff. No scorched earth litigation against a Railroad Company. No federal appeals for an aggravated felony. These WILL burn out most attorneys. There are first years that do this stuff, but I know many first years who get stressed out in a single-practice shop than I know attorneys who juggle a federal appeal or complex litigation all alone.

You need to talk with a mentor of some sort on how you conduct your initial conduct. It does not need to be a script, but you should write down, in VERY simple terms, certain things the prospect MUST know: your fee, your expecation in them responding to discovery requests, your expectation that they will tell you everything. It is so critical to do this at the onset and to document it in a post-consult letter mailed to them (if they pay). I think most legitimate bar complaints against a client's own lawyer stem from readily quashable miscommunication at the onset of the case.

Once you have done a variety of cases, get an idea of the areas of law that are most profitable for you. Which areas are least profitable? Which do you enjoy most? Enjoy least? If there are some with low profit and no enjoyment, drop them. All the rest you need to figure out how to monetize your legal services in these areas. There are really good and wealthy solos who work 80 hours a week micromanaging every major case they have. There are really good and wealthy solos who are in the office 5-10 hours a week, and have well-picked non-attorney office manager(s) and entrusted associates managing "the process." Both ways are admirable IMHO. Both have risks.