It's all about the 1st... [ENDED] [Solutions posted]

I wasn't planning on giving away hints, but I will try to help anyway. If you just look at the pictures, unless you can read my mind, you won't be able to solve the puzzle. There are clues hidden where I hint at them, which can guide you almost step by step through the 1st part (in one of my comments below I said I've written something in a certain way for a reason).
Mind the title of the puzzle too, you often have to consider the 1st of something; that can apply multiple times, in different ways, through the whole puzzle.
Lastly, I'm no encryption master, think simple. If I point you at something, just look for it (especially true for 2nd part).

Well let's see. Concerning 1st part:
I reformatted "a little" the text to make more evident where you should look. Probably too much ^^"
I won't give further hints for this part.

Concerning 2nd part, I see basically everyone is stuck there. I'll give you a few hints:

• If I had to post the text of that part on this site, most people would find their way right away, without any puzzle knowledge.
• Consider the flags together, each caption apply to all of them. It's not like the caption of one flag refers only to that single flag.
• If a number confuses you, maybe you should ask the most knowledgeable guy around the net.

Edit:

• Check out the comments and the IMPORTANT NOTES in the train 1st GA too.

>>>>> SOLUTIONS <<<<<

1st of all, the puzzle is called "It's all about the 1st...", the 1st of something is a recurring theme throughout the puzzle.

1st part
There were hints hidden in text.

I mean, what I'm hinting at here is:

• Never ask to openly say it, giveaways need a little fun, leave always games secret.
• Getting answers might end in disappointment, sadly.
• Get a minute eventually to inspect the lines, especially signal of nr.6 seems to express a meaning.

If you only consider the 1st letter of each word, ignoring commas, you'll notice that each line tells you something.
In the order:

• NATO signal flags -> The 1st wiki page you get by googling tells you what the flags are.
• Game IDs -> it tells you the meaning of the numbers you get (4 lines of flags, 4 numbers, 4 answers)
• Game titles on steam -> it tells you what I want as answers (you can match ID to game through steam urls or steamdb; i.e. https://store.steampowered.com/app/594650/)

If you do just that, it doesn't work. In the 3rd sentence there, I tell you to inspect the lines and to focus on the flag corresponding to number 6; if you compare it to the one on the wiki page, you'll notice that in my picture the flag is mirrored. The truth is that the whole picture is mirrored (horizontally in this case; the other flags can't help you understand that, they remain identical).
So, you have to reverse the numbers before you use them.
So the numbers and the 1st ITH answers were:

• 768310 -> Er-Spectro
• 594650 -> Hunt Showdown
• 552700 -> WORLD OF FINAL FANTASY®
• 496620 -> Monster Slayers

2nd part
Once again there's something hidden in text:

1st!! Or maybe not. Who cares about ITH statistics anyway? >.>
Congratz on completing the 1st part of the puzzle.
Onward with the 2nd part!
More flags for you, as you can see.
Maybe you'd want something different, but with all those colors and shapes...
Aren't they simply beautiful?

If you consider the 1st letter of each line, you get:
1 COMMA or 1st COMMA if you prefer. Here on SG site you may have already noticed if you use scripts, but on ITH it is less evident, the 1st comma in the text hides a link that leads you to an imgur gallery (https://imgur.com/a/TBYxrSN), with the same 4 flags you see in the ITH page. There, you will see a caption under each flag, in the order:

• 3166-1 -> Google this number and get to this wiki page. Match each flag with its code, in the order (BJAWMHLK)
• 76841352 -> it tells you the order of the letters (if BJAWMHLK is 12345678, you have to rearrange them to: LHKWBAMJ)
• A 1337 -> it tells you to convert the letter "A" in leet speak (LHKWB4MJ)
• Rome Paris Porto Berlin Amsterdam 4 Stockholm Liverpool -> it tells you the letters capitalization (capital city corresponds to capital letter, in the order: LHkWB4Mj; it's the code of the 2nd ITH)
  note: this last step is useless, it's been pointed out that ITH doesn't care about capitalization. I'm sorry for that, I didn't know.

Last part

Last step!
It's all about the 1st as the puzzle title says. 1st cakeday, 1st puzzle, 1st letter of each word in 1st part, 1st letter of each line and 1st comma in 2nd part... 1st what now?
This is the 2nd ITH, so do not look for your answer here.

Nothing is hidden in the text here. I'm just telling you that yet again you have to mind the 1st of something and that you won't find the answer here, because it's the 2nd ITH -> you have to go back to the 1st ITH.

There, you'll notice that there are kinda redundant numbers assigned to each question (1 to question 1, 2 to q2, 3 to q3 and 4 to q4), those digits are the same of the 2nd ITH question 4 21: 3
Rearramge the answers of the 1st ITH following the order of those digits and you get the 2nd ITH answer:

• Monster Slayers
• Hunt Showdown
• Er-Spectro
• World of Final Fantasy®

Pick the 1st word of each title, minding the spaces and the ":" and put them together, you obtain "Monster HuntEr: World", the final answer. Which is the 1st game in the community wishlist page.
Note: a pair of people got this last answer out of intuition just going through that page community wishlist page,

That's it. Thank you to all who tried. ;)

If it makes you feel better, you're not the only one.

I can relate to that, I mean a blacklist is going far, but I like to know which game I am trying to get before getting frustrated over a puzzle, I hid a lot of games so high chance it won't have any for me and that's why I really dislike it when I am doing my best on a maybe not even fun puzzle just to find out AGAIN it has nothing I care for.

Same as Maruten above, it'd be nice to know what games are in a difficult puzzle. I wouldn't blacklist for any puzzle but I know how frustrating it sometimes is when you complete a really hard puzzle only to have nothing you didn't already have or want. It's just practical, if the games aren't listed, now I only do them if the puzzles are simple or the maze ones that aren't really a puzzle unless it was a big event maybe.

I would not blacklist. But yeah, it sucks when you are solving a puzzle for games you are not interested

I willingly took a risk there. I know someone would eventually complain about it. I already got blacklisted by one person yesterday. Might that be the reason? Maybe, who knows? Or better, who cares? I'm pretty sure I'll get more.

To be honest though (take this as a hint for the puzzle itself), it was all an excuse, I wrote those few lines about not telling game titles for a reason and they've been written that way for a reason too.

What I can tell you is that after 1st part you get access to a 4 wagons train: 3 humble bundle leftovers from September monthly + one game that is in top40 of SG community wishlist (and going up). The grand prize at the end of the puzzle is even better. I can't say more :X

nope, maybe I was wrong...

My guess is that ITH 1 means "It's Too Hard 1"