part two is better
Part one of "Notes" has some good writing, but it's part two that really takes the work into a different realm.
Part one basically sets up the narrator's neurotic condition, and his anger and frustration, along with a lot of posing and phony bravado. Part two switches to a different tone -- instead of ranting, the author begins telling a true story from his past, and the effect of the story is to completely shatter whatever weak barricades the narrator put up in part one. The whole point of the book, in a way, is the contrast between the two parts. So, don't give up on it without getting to part two.