Hi! I will update this thread regularly with new references. Here’s a few links to get started with Toki Pona:

Main resources

Glyphs and fonts

ilo: Toki Pona translation tool by @0f5a (gone offline?)
Kommit: general flashcard-based memorization tool by Rosano
nimi ale pona: lexicon including non-official words
Org Flashcards: general spaced repetition system for Emacs org-mode by @l3kn
pimeja: interactive dictionary with official English and French definitions by @ice
Practical Toki Pona Dictionary by @soweli_nata
Toki Pona Parser by jan Lope
Toki Utala: Toki Pona vocabulary mobile app by Increpare