Somewhere I can find what each button actually do?

[Regalian]

As a new player I'm not sure if it's just me but it's been extremely hard to get any information on this game, and what each buttons does.

For example:
1) I can't find any explanation on the 'share' button that costs gold when you open packs, what does it do?
2) When I click gallery, it appears to be perpetually loading, and I accidentally spent 100 gold by clicking on a faint card. After doing so it appears that I can just see the picture clearly and can't even save the file to my phone?
3) What exactly is play rewards? It appears to give me 50 gold each time I win? But it doesn't appear immediately, unless I restart my game and it seems inconsistent since sometimes even that doesn't give me gold after a win. Is 1200 the maximum gold I can get per day through playing? And are there any benefits to let the player rewards fill up to 200/200? If not why not just give us the gold straight away and instead want us to click get gold each time?
4) What exactly is pro and hardcore mode? I couldn't find any of these information online. After playing through several hardcore mode, I'm assuming that you can use multiples of the same card in 1 game, but can't use that particular card anymore in the other 2 games? And as new player I'm trying to complete the daily quests and I barely have over 18 different cards.
5) How does match making work? I'm paired against these people with multiple 4 star cards. Do they take your summoner level into account or just the win rate?

I want to say although the game looks extremely p2w, you guys have the best card artwork in all the card games I've seen so far, and I'm pretty much playing the game because of it!

[ecb_admin]

Dear player, answers to your questions.

1) Share to social network and get rewards.
2) It's to unlock the full artwork.
3) It is a rewards that will fill up over time automatically.
4) You could find the explanations in Library.
5) Its a complex mechanism that will evaluate lots of factors.

[Regalian]

Dear player, answers to your questions.

1) Share to social network and get rewards.
2) It's to unlock the full artwork.
3) It is a rewards that will fill up over time automatically.
4) You could find the explanations in Library.
5) Its a complex mechanism that will evaluate lots of factors.

Thanks for the reply! By Share to social network do you mean I get the amount of gold on the button? I was assuming it costs me that amount of gold if I click the button.

[ecb_admin]

Yes, after you share, you will get the amount of coins.

[yurko]

The admin is watching us, yeah...it's good