Practice gives you every question contained in the Lessons up to the 'level' you are on. As you (GoldenRoses) are level 1 ('Lv 1'), this means Practice gives you all the questions from Lesson chapters 1 to 10 -- even though you haven't finished all these chapters yet.
If you are worried about losing EXP, then it is best that you first finish all the level 1 chapters (1-10) before doing any Practice.
Your level is based on how much EXP you have, not which lessons you have completed. I am level 6, but I still haven't finished level 4 lessons. If you become level 2 but you want Practice to only give you level 1 questions, then in Practice 'Settings' you can set it to only 'Level 1' to do this.
When I first started on this site, I didn't use the Lessons at all. Instead, I started with Practice -- learning new words by just guessing and making lots of mistakes, then learning things from those mistakes -- trial and error. :P
June 4, 2014 at 11:36am