I have a copy and like it much. However, i was always partial to Frege's Begriffschrift. His notation was really creative. It's a shame Russel's deflation of that project has sentenced it to the rubbish heap of history.
i like to think of Frege and the Begriffschrift like this
Boole: logic + algebra = algebraic logic
Frege: logic + functions = predicate logic
ergo, if Boole is rightly deified then so should Frege regardless of minor infelicities (which prompted type theory anyhow) -- again, apologies if this is totally misleading
The reason I say it's in the rubbish heap is because basically only experts and people with strange hobbies know about it. The set of people familiar with the Principia is vastly greater than those who know what the Begriffschrift is. That's what I meant, not that it wasn't important, but that it's importance is now under recognized and under appreciated.
> he announced the discovery to Gottlob Frege of the paradox in Frege's 1879 Begriffsschrift