On the leetcode home page, you will get to see many options -

1. Explore
   -> In the explore section, you will get sets of questions based on a single concept. Such as arrays, strings etc. You will also get some interview question sets here. Such as Google, Adobe etc. Leetcode also has daily challenge problems which are included on the month leetcode challenge. Such as the 'January Leetcode challenge'. You will get 10 coins on solving each daily question.
2. Problems
   -> Here you get all the questions that are there on Leetcode.
3. Mock
   -> Here you get the mock interview sets of different companies.
4. Contest
   -> Leetcode also organises weekly and biweekly contests which are available in this section.
5. Discussion
   -> You will get all the discussions taking place on Leetcode.
6. Store
   -> Here you can purchase a premium subscription. Along with this, you will get the amount of coins you have. With the coins you can buy different items provided in the section. You will also get the methods by which you can earn more coins.
   On the right side, you will also get a playground, notifications and profile options. In the playground, you can write your own code. It is very similar to an online compiler.