The wWay tThis wWebsite wWorks is nNew for mto Me

This website is not the first one I've used to give and receive corrections for our writing in a foreign language, but the system that is used here to balance the trade of corrections between users is new for me.

That's why we all are bound to correct posts that have already been corrected.

In short, the graddegree of similarity between the different corrections give as clues about the graddegree of importance (OR severity) of the mistake, and helps to memorize it.

So if you want to challenge yourself with a streak, don't start writing at 23:30 because you might ¿discover/find out?

This website is not the first one I've used to give and receive corrections for ourentries writingten in a foreign language, but the system that is used here to balance the tradgive-and-take of corrections between users is new for me.

If I've understood wellthe concept correctly, I can't post a new text if I haven't corrected at least half (of) the quantity of corrections I've received so far.

That's why we all arere all bound to correct posts that have already been corrected.

When the correcters all agree about something, reading several times the same correction with the sameseveral times with comment buts phrased in differently ways helps a lot to understand and remember it.

When they don't agree, I meansuch as when someone corrects a thing that washad not been corrected by another one, I deduce thatsomeone else, I usually think the mistake is less important.

In shortother words, the graddegree of similarity between the different corrections give a clue about the grade of importance ofs me an idea about how severe the mistake is and helps me commit it to memorize ity.

The other side of the coin is that you need to correct a certain quantitynumber of posts so that you can post your own.

So if you want to challenge yourself with a streak, don't start writing at 23:30 because you might ¿discover/find out?

This website is not the first one I've used to give and receive corrections for our writing in a foreign language but the system that is used here to balance the trade of corrections between users is new for me.

Or maybe "balance the tradeoff of corrections"

If I've understood it well, I can't post a new text if I haven't corrected at least half of the quantity of corrections I've received so far.

That's why we all are bound to correct posts that have already been corrected.

TAnd that's why we generally receive more than one correction for the same post.

Or some other transition. People may say you shouldn't start a sentence with "and," but native speakers do it all the time. "Additionally" would also work to avoid starting with And.

So if you want to challenge yourself with a streak, don't start writing at 23:30 because you might ¿discover/find out?

Either, but find out is more common.

The way this website works is new forto me

Both can be correct; however, in this context, "new to me" is more fitting

This website is not the first one I've used to give and receive corrections for our writing in a foreign language, but the system that is used here to balance the trade of corrections between users is new forto me.

That's why we all arere all bound to correct posts that have already been corrected.

When the correcteors all agree abouton something, reading several times the same correction several times with the same comment but phrased differently helps a lotme to understand and remember it a lot better.

In short, the grade of similarity between the different corrections give a clue aboutindicates the grade of importance of the mistake and helps me to memorize it.

Where you have used "grade" you could use "level" instead
And apart from "indicates" you could've also said "points to"

The other side of the coin is that you need to correct a certain quantitynumber of posts so that you can post your own.

It's a bit more natural to say "number" instead of "quantity" here

So if you want to challenge yourself with a streak, don't start writing at 23:30 because you might ¿discover/find out?

Both "discover" and "find out" are equally correct :)

This website is not the first one I've used to give and receive corrections for our writingtexts in a foreign language but the system that is used here to balance the tradinterchange of corrections between users is new for me.

"trade" feels slightly odd here, I'll be honest, I am not totally sure why. I think perhaps, outside of a commercial transaction ("I traded my iPhone for an Android") it has kind of negative connotations ("they traded blows for a while before the police arrived").

If I've understood wellcorrectly, I can't post a new text if I haven't corrected at least half of the quantity of corrections I've received so far.

That's why we all arere all bound to correct posts that have already been corrected.

And I must confess that I really appreciate that.

Nothing strictly wrong with "I must confess", but it feels a little bit inappropriate in this context, because usually it is used for something you are not proud of.

For example: "I am glad you like my text, but I must confess, I copied the whole thing from my friend."

Perhaps you could say:

"And I have to say, I really appreciate that."

When the correcters all agree about something, reading several times the same correction several times with the same comment but phrased differently helps a lot to understand and remember it.

When they don't agree, I mean when someone corrects a thing that was not corrected by another persone, I deduce that the mistake is less important.

"another one" is really for non-living things

"I ate one cake and then, when no-one was looking, I ate another one."

In short, the gradelevel of similarity between the different corrections gives a clue about the gradelevel of importance of the mistake and helps to memorize it.

"grade" is not incorrect, but it is much less common in this sort of context.

The other side of the coin is that you need to correct a certain quantity of posts so that you can post your own.

nice use of "other side of the coin" !

you can also say "on the flipside"

So if you want to challenge yourself with a streak, don't start writing at 23:30 because you might ¿discover/find out?

both "discover" and "find out" work here