You DO NOT need to be a lawyer to get the arguments. By the time the discussion reaches this stage, the arcane bits are stripped out and referenced explicitly.

In fact, the jury are laypeople, just average Joe's and Jane's. All arguments must be simplified to a point that average people can understand. So it's a good point to pickup info.

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Here's a few key events to note on this particular trial:

1. Strong opening argument from Twitter over the contract. My opinion of course, but just read the document and get a gist of the argument yourself.

2. Weak opening arguments from Musk's lawyers.

3. Repeated reprimands from the trial judge for various mistakes the Musk lawyer team were committing

4. Inconsistency between what Elon Musk was saying in public / in the media and what his lawyers were saying in the trial.

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Note that in this special case, a judge decided the case instead of a jury. But the argument style at this late stage is simplified to the point where ordinary people / a jury can understand in any case.