Whats the best way to take action for me as a single user?

That’s a tough question, because a lot of us explicitly don’t want this to become reddit, or as large as reddit (I am of this opinion myself). If you’re looking for things like a community for the city you live in, I think that’s far better served by creating a regional isntance. Midwest.social is a good example of that, as it yall.theatl.social, an Atlanta-focused instance.

What kind of posts should I focus on making?

Whatever you want to make, the world (and the fediverse) is your oyster.

Ive heard of fetching reddit posts, maybe I could do that if theres like an easy process to do so, I’d happily feed some communities I like with posts from the silicon valley mafia platform to this platform!

Once again, a lot of us would prefer to not have that but have original content and discussions. Others may feel differently, however this is certainly my own opinion.

Also whats the name of this platform?

Lemmy.

I registered under feddit org, is the umbrella term called fediverse?

Yes, it is called the fediverse.

Accroding to wiki then this(fediverse) should be linked to platforms like pixelfed and mastadon too, is it?

Technically, yes, they all run on an underlying architecture called ActivityPub. Lemmy and Mastadon can see each other, but most people don’t browse between them that way because of how differently they work. Lemmy posts look weird on Mastodon and vice versa. Mastodon doesn’t have the same kind of threaded conversations, it’s conversation trees are like Twitters. I, for example, have a different Mastodon (Sharkey) account and Lemmy account because it’s easier for me to have them be separate entities even though they can technically connect.

How do I see content from them or in what way are these platforms interlinked with this reddit styled one?

That one I can’t answer because I haven’t tried it myself.

But here’s a link I did a quick search for that seems to have instructions on how you can. I haven’t tried it myself so your mileage may vary.

vijayprema.com/using-lemmy-from-my-existing-masto…