As a practising lawyer who has also taught law, I advise against "just reading summaries" of cases. There is no substitute for reading judgments. You need to learn how to read a judgment at speed, and to identify any important statements of principle which it contains, avoiding getting bogged down in the particular facts of a case. Non-lawyers sometimes think that the common law operates by a dumb sort of pattern-matching, and even some lawyers sometimes fall into the trap of assuming that stare decisis means "find me a case with the same facts as this one".
One day in the future you might rush back to your chambers at five past one, trying to snatch a sandwich and a cup of coffee (you got up at 4am), answer thirty emails on other pressing matters, and then rush back to Court at five to two. Meanwhile your opponent (MA (Cantab) LLM (Harvard) - a skiing buddy of yours) emails you three previously unseen authorities to deal with a point that the Judge (MA (Lond) D Phil (Oxon) - she taught you Contract when she was a Fellow of Merton) was interested in during the morning. You now have minutes to gut the cases, find out what helps and/or hinders your client's position, and maybe find another case or two which impact on the point. Slurp that coffee and hurtle back across the Strand with your pupil trotting after you balancing a White Book and two lever arch files.
Maybe your future involves transactional law. OK, it's now 3 AM in London and the deal is closing in Singapore in twenty minutes. The other side have just pointed out that clause 97.1 in the mezzanine finance agreement may be problematic because of something that the Court of Appeal said last week in a case about a charterparty. The exhausted partner looks at exhausted you, with your Oxford BA (maybe a BCL too), and says "what's the answer?" You are up for promotion to Senior Associate next week, so drink some of that cold office coffee, and crack on. Maybe you are the exhausted Partner. The client is annoyed about the last deal going a bit south, and has been talking to the rival law firm down the road. Your team did not make its billing target last month and the Managing Partner wants a meeting. Order more coffee.