The best way to practice Russian in Summer to have Russian girlfriend/boyfriend to read, watch and relax.
I wrote some recommendations about books and films. You can check them here and here. Now I will add some new resources.
For beginners of level A1 educational cartoon.
You can do also tests for free for all levels A1 – C2. This offer will be available for free until September 2020.
For beginners Level A0
Learn Russian With Me 