Which app are free users here using for practice? Something you can practice topic by topic.

Answer 1

you can use various sites for practice such as:

Codewars. www.codewars.com. Codewars programming is a lot of fun. ...

HackerRank. www.hackerrank.com. ...

Coderbyte. www.coderbyte.com. ...

CodinGame. www.codingame.com. ...

LeetCode. www.leetcode.com. ...

Topcoder. www.topcoder.com. ...

Project Euler. www.projecteuler.net. ...

CodeFights. www.codefights.com.

you can also read books on programming because the books also contain tasks

Answer 2

https://mastery.games/build/zelda/

https://gridcritters.com/ 179$ cost

https://flexboxzombies.com/p/flexbox-zombies

https://flukeout.github.io/

https://www.tynker.com/parents/

http://www.flexboxdefense.com/

http://cssgridgarden.com

https://flexboxfroggy.com/