I recently arrived at level 23 for Spanish. What do the levels mean? Is there new vocabulary?
No, the levels are simply based on the number of experience points you have accumulated for a course. As your level increases you need more and more XP to reach the next level. Once you reach 30,000 XP, you reach level 25 and you will not reach any higher level although your XP will increase as normal as you practice and strengthen.
Level 23- great! Levels mean that you are getting better and better, or you do a lot of duolingo. You also get lingots.
What do the levels mean?
Is there new vocabulary?
Here are some tips to improve your Spanish in other ways:
The reverse tree, the course English for Spanish speakers, is very useful. There you have to translate much more from English to Spanish.
Here is the link to the Duolingo Help Center for
"How do I switch my Duolingo course language?" https://support.duolingo.com/hc/en-us/articles/217005666-How-do-I-switch-my-Duolingo-course-language-
Use the web version of Duolingo (http://www.duolingo.com) instead of the App. The web version works also fine on a tablet or phone, when WIFI is available (or 4G/LTE in an internet bundle)
Try to read and write in Duolingo's Spanish discussion forums. There you will find the daily used words, sentences and idiom.
Apart from that
- read a newspaper article every day and try to learn its new words
- listen to podcasts, watch movies with or without subtitles
- converse with a native speaker as much as possible
- write smaller texts, upload them on http://translatihan.com and let them be corrected by native speakers a.s.o.
- try "Duolingo stories" in the tab "Duolingo Labs" https://www.duolingo.com/comment/23206010
- more resources for Spanish in Knud van Eeden's:
""Can you give some links about Spanish?"
There are numerous possibilities. Duolingo will only bring you to an A2/B1 skill level in reading/writing and A1 (maybe A2) in listening/talking.
Info about language levels: https://en.wikipedia.org/wiki/Common_European_Framework_of_Reference_for_Languages
Read from "Common reference levels".