This question is especially for people who have joined in the last week. Have you used other fediverse platforms or is this your first time really using one? What do you think of it so far? Are you aware that you can comment on Lemmy posts with a Mastodon account?
Go to the search page and put in a link to a kbin magazine (what lemmy calls communities and reddit called subreddits) for example https://kbin.social/m/tech
One of the results will be something like https://lemmy.world/c/[email protected]
It might not have any content on it until you or another user on your instance subscribes to it though
Once you subscribe from the https://lemmy.world/c/[email protected] page it will show up as a subscription for you on Lemmy until you unsubscribe so you don’t need to search for it every time
Will it appear in my all feed?
I’m not 100% on that, I think so though.