How useful are levels?
I finished the Spanish tree, in the Czech tree there are still 32 lessons to go. Yet, my level in Spanish is 11 while in Czech it is 12. I do know that my Spanish is way better than my Czech. Maybe DL should just abandon this level, and just count number of lessons and xp's?
Which means, if I go through Spanish quickly, without making mistakes and without strengthening, I get to level 11. But struggling with Czech and repeating and strengthening levels on a daily basis, I gather more XPs and get to a higher level, while learning less. If you want to know how well you master a language, i suppose you have to look at the number of lessons you have completed, not the XP or level.
That's my impression as well. I rushed through the Italian course, but now with Japanese it is quite different. I have to repeat basic lessons all over again, because I can't remember basic vocabulary. And compared to the Italian tree, the Japanese tree has fewer lessons.
For me the xp points were a kind of motivation to stick to the Italian course, although once I finished the tree once, the learning curve much declined.
May I ask if you learn Russian and Spanish at the same time or do you focus on Russian? Best luck
Levels only show XP earned in the tree. Someone could reach level 25 with just the first skill. People usually finish trees at level 10-15 ish or higher if they spent a lot of time on the tree. Levels could motivate you but they only show how much XP you've earned, not necessarily how far in the tree you are or your skill in the language.
Levels are useful if getting higher levels encourages you to review more and adds to your learning. Outside of that, not very. For instances, someone recently had a level 25 in Japanese and Korean. And, it turns out they cheated to artificially inflate the numbers on their levels. For them, not only are the levels useless towards their language education, but now the person has also lost their account. So, it all depends on how and if someone puts them to good use. :)