I, you and we prefixes
At the beginning of the course I was using a mobile and didn't know that tips were available. Is it possible to access the tips from earlier lessons? I'd specifically like to know the prefixes involving I, you and we to say sentences such as 'I see you' or 'you see us' or 'we see you' etc. I'm trying to piece it together but I'd love to have a table like I have for the later prefixes and the pronouns.
Yes. If you access the course on the Web and click on an earlier Skill, it will expand to reveal a Start button, a key, and a light bulb.
If you click on the lightbulb, it will show you the Tips & Notes for that Skill. The specific prefixes you are asking about are at https://www.duolingo.com/skill/kl/Vocab-1/tips-and-notes.
You can also find an already existing table at https://en.wikipedia.org/wiki/Klingon_grammar#Prefixes
Each Tips & Notes entry is for the entire Skill and not based on how much of the Skill you have completed. They do not change based on the how much of that Skill you have completed nor how many crown levels you have. Please do go back and read the Tips & Notes for each of the Skills you have already done all or a portion of to make sure you haven't missed anything.