1. Chapters 29 and 30 both start on "seed".
2. 29:12 "I shall speak unto all nations [goyim?] of the earth, and they shall write it". 29:14 does "fight against my word" here mean "Word" as in John 1?
3. 30:6 after "scales of darkness" "fall" from the the eyes of the Lamanites, they become "pure and delightsome". Again, I don't think that when Nephi talks about his relatives having "skins of blackness", he means that they turned from Semites to Amerindians. We're talking about something that is more figurative here, unless we believe that the Lamanites were both black and lizards.
4. 31:3 God gives light to the understanding -- that's the mind, not feelings. It's funny to see Nephi say he delights in plainness after all the visionary, almost encrypted stuff he's written, but of course he had to. Let he who has ears hear, the evangelists would say. So now, at the end of his writings, Nephi gets to the heart of the matter as directly as he can, without connecting it to or explaining the visions that have gone before.
5. 31:13-14 the tongue of angels shouting praises to the Holy One of Israel is temple imagery -- it's the Levites, singing in the temple. (In apocalyptic visions, angels = priests). So even Nephi, in his plain doctrine of Christ, talks (subtly) about entry into the temple. Then when he repeats the repentance, baptism, Holy Ghost sequence in verse 17, he doesn't talk about the tongue of angels anymore, but instead talks about the strait and narrow path... for which, see below -- we are again in temple imagery. And once you're in the strait and narrow path, you just press forward to get eternal life (= life with God = entry into the Holy of Holies).
6. 32:7 Don't make Nephi mourn -- search knowledge! Understand great knowledge! How? vv.8-9, prayerfully!
7. 33:1 It's absolutely hilarious that Nephi says he isn't powerful in writing. Either he's super-modest, or he has a little bit of mischief in his heart and a wink in his eye when he scratches this out on the plates. Ha!
8. Temple and Day of Atonement images in 33:9.