Welcome! For getting started, I recommend following lots of people, and then unfollowing/muting to fine tune your 'feed'.

You can have a look at the people I follow for ideas: https://typo.social/@blag/following.

And also at the activity and members on typo.social https://typo.social/public/local

Hashtags are worth following, although so far #SignPainting and #Signwriting are pretty quiet!

For more general tips, follow/take a look at the @FediTips account and website: https://fedi.tips/