Hello #Forkiverse adventurers! Welcome to the Fediverse! We are glad that you are here.

Probably now you have a very boring feed. This is how you moderate it. Go onto the live feed button and scroll. If there is someone interesting, follow them. You can unfollow them later if you like.
Then follow some hashtags. Use the number symbol and a word in the search bar and see if anyone is there, then follow the hashtag. Those posts will end up on your feed.
If you have a question, try typing #askfedi