l know I, Langcorrectors! l know, Langcorrectors!

"Langcorrectors" would be a proper noun because it's a name for a group of people When you say "I know langcorrectors" without the comma, it can mean that you know who Langcorrectors are. Another example is: "I know Alex, she's in my class." This is not what you were trying to say.

l know, Iangcorrectors! l know, Iangcorrectors!

ILangcorrect Langcorrect

and from this day, we start toNow we struggle to differentiate between the capitalized "i" fromand the non-capitalized "L". Now we struggle to differentiate between the capitalized "i" and the non-capitalized "L".

'From this day' sounds a little odd because there is no specific day being referred to. You differentiate A from B, or you differentiate between A and B. You don't need both 'between' and 'from.'

and fFrom this day, we start to struggle to differentiate betweescern the capitalized "i" from the non-capitalized "L". From this day, we start to struggle to discern the capitalized "i" from the non-capitalized "L".

"discern" has a similar definition to "differentiate", but it sounds better here.

and fFrom this day, we start to struggle on, it became hard for us to differentiate between the capitalized "i" from the non-capitalized "L". From this day on, it became hard for us to differentiate the capitalized "i" from the non-capitalized "L".

And from this, we learned a lesson that we should respect serifs! And from this, we learned a lesson that we should respect serifs!

And from this, we learned a lesson that: we should respect serifs! And from this, we learned a lesson: we should respect serifs!

However E, everything come with it's prize, and after this shift, we got this (I,l)! However, everything come with its prize, and after this shift, we got this (I,l)!

If you share this post elsewhere, it would be nice if you could replace '(I,l)' with a larger graphic of those two letters.

However E, everything comes with it'sa prize, and after this shift, we got this (I,l)there's the problem differentiating I and l! However, everything comes with a prize, and after this shift, there's the problem differentiating I and l!

However is a transition word/phrase in this sentence, so it needs a comma afterwards. Everything does not need to be capitalized. I changed the end of the sentence to make it sound better.

However E, everything come with it'ss at a prize, and after this shift, we got this (I,l)! However, everything comes at a prize, and after this shift, we got this (I,l)!

Serifs isare these smaII Iines attached to the ends of Ietters to make them ugly. Serifs are these smaII Iines attached to the ends of Ietters to make them ugly.

Bwahh hah ha!

Serifs isare these smaII Iines attached to the end of Ietters to make them ugly. Serifs are these smaII Iines attached to the end of Ietters to make them ugly.

"Serifs" is plural, so you need to say "are" instead of "is"

Serifs isare these smaII Iines attached to the end of Ietters to make them ugly. Serifs are these smaII Iines attached to the end of Ietters to make them ugly.

So most modern websites started to use Ssan-Sserifs (the fonts without the Sserifs) to make their websites cool, just aslike this website. So most modern websites started to use san-serifs (the fonts without the serifs) to make their websites cool, just like this website.

Serif doesn't need to be capitalized. Bonus information: 'san-serif,' 'sans-serif,' and 'sans serif' all appear to be correct.

So, most modern websites started to use San-Serifs(, the fonts without the Serifs), to make their websites cool, just aslike this website. So, most modern websites started to use San-Serifs, the fonts without the Serifs, to make their websites cool, like this website.

"So" is a transition word/phrase in this sentence, so it needs a comma afterwards. Instead of saying what you said in the parenthesis, you can just put the phrase in between commas. You can do that with anything you describe. Here's another example: Alex, a girl from my class, is coming over tonight to study for the test with me.

So, most modern websites started to use San-Serifs(the, fonts without the Serifs), to make their websites cool, just aslike this websitone. So, most modern websites started to use San-Serifs, fonts without Serifs, to make their websites cool, just like this one.

I replaced "websites" to avoid repetition.