Where is the "Words" tab?
In the Spanish course, you can go to the words tab to see words explained and also see what words it's the longest since you've encountered. Why is this not available in the Esperanto course? I found it to be very useful, because I'm a person who likes to memorize words with mnemonic devices.
It was never available in the Esperanto course. It is slowly being removed from other courses that did have it (only official courses not made by volunteers had it). The reason is they now have tinycards and the old card system wasn't useful. It often showed that you knew words that you got wrong, the flash card part of it didn't test whether you knew it or not, you just clicked whether you did or not (as in you weren't tested on it). Use Tinycards or other website for flashcard practice.
Oh, okay. I didn't know that. I tried Tinycards and it's really useful, thanks a lot!