toki pona is a minimalist conlang (constructed language) with less than 150 words that emphasizes simplicity, so users of toki pona need to get creative whenever they talk. using broad concepts like "goodness," "communication," and "self," and including a few particles to make real sentences, toki pona bypasses most other languages' grammar and vocab struggles. in toki pona, concepts to go from head to head without needing to be translated into any other language first. and, if you want to talk about something that's not already in the list of words, you'll string together existing words to convey a description with just enough detail of what you think this "something" is. once you get the hang of it, it's really convenient to use, the grammar is intuitive, and it's pronounceable by any language's native speakers (making for an extremely diverse community). it's great for communicating because it's about understanding how the other person thinks and interpreting their language the way they want it to be interpreted. learn toki pona!
Good intro video (first video I watched): what is toki pona?
Overview of grammar: Learn toki pona in 18 minutes
Unofficial toki pona course: lipu sona pona
Another series of toki pona lessons (more resources linked on this website as well): mun Kekan San
toki pona dictionary: lipu Linku
toki pona cheat sheet: here
another online course: lipu sona