Ok so, i clicked on the orange shop button, and there's a blank screen. I been waiting for a long time now, and nothing shows up. I want to buy a champion, but i don't see anything. Help plz.

Relog, click it again. Go to the champions tab, find who you want. Click on the bottom of it and select your payment method(IP). You get your champ!

Is the champions tab, under profile?

Only for viewing them. If you want to purchase them, there's a champions tab under the shop page.

Yea, that's the problem. When i click the orange shop button, nothing appears.
In other words, how do you get to the shop page?

try this. It's the general fix if the store won't load.

http://support.leagueoflegends.com/e...roubleshooting

Yup, something i find annoying is that the shop refreshes itself.
EVERY SINGLE TIME YOU EXIT OUT OF IT.

Annoying eh? XD. But i think it should load, otherwise try the thing above.