To my friends migrating from Twitter to Mastodon, I can't recommend http://movetodon.org enough for finding your follows on the new site. It will probably stop working soon as Fakesavant Babyman is having multiple tantrums. Takes a few minutes to work, but the "follow all" button makes it easy.
If you're also migrating to Post, Seth Abramson's lists are indispensable.
Movetodon: Finds your Twitter Friends on Mastodon

@stevesilberman Seth is an @#€%&. And why move from one leaky vessel to another when there's a lifeboat waiting?
@martinvermeer Mastodon is not for everyone, and both Post and Mastodon are rapidly evolving. Some of my disabled friends find the Post onboarding process easier. Seth's lists are well curated; that's what mattters most when people are fleeing a burning building.