I want to add columns that represent counts from other tables.

I have 3 tables.

Messages

MessageID    User      Message      Topic
1            Tom       Hi           ball
2            John      Hey          book
3            Mike      Sup          book
4            Mike      Ok           book

Topics

Topic      Title     Category1    Category2
ball       Sports    Action       Hot
book       School    Study        Hot

Stars_Given

starID     Topic
1          ball
2          book
3          book
4          book

I want to end up with:

Topic_Review

Topic    Title     StarCount    UserCount    MessageCount
ball     Sports    1            1            1
book     school    3            2            3

So basically I want to attach 3 columns with counts of unique values (number of stars given within each topic, unique users who have messages within topic, and the number of unique messages in each topic).

I want to eventually be able to filter on the categories (look in both columns) as well.

Also, I want to eventually sort by the counts that I join. Example, I'm going to have a button that sorts by "number of stars" by ascending order, or sort by "number of users" by descending order, etc.

I've tried adapting other people's answers and I can't get it to work properly.