What are some building subscription list/finding communities Tips and Tricks?

Many newbs are washing up here, myself included. What are good ways to get the most out of Lemmy? (Using Jerboa)

There isn't an algorithm, so I guess we need to self filter and manage a good sub list.

At first glance I'm guessing, use the "all" feed. Block communities that are irrelevant, sub to interests and leave the undecided ones alone. Repeat on different sort options, Repeat for specific hosts.

What are your tricks for finding interesting content and building a sub list.