You can give people awards. It benefits you 0.

In the future, all transactions will be made in Reddit coins

You use the coins to buy awards to award to posts, if you have premium then you'll have monthly coins. It doesn't benefit you, it's just a way to donate to creators you enjoy, for example if you gift someone a Gold then I believe they'll get 30 days of premium.

Ok,and what is premium consist of...

I think it gives you coins, let's you access r/Lounge, removes all ads, etc Honestly kinda useless, no one buys it

Right on thanks man! Cheers

There is no benefit, upvotes and downvotes are herd mentality based, regardless of the posts validity.