AAAAXY Hint #1

Leap of Faith:
One of the biggest roadblocks in the game is the fading blocks that dissapear if you jump. Stand on the green platform next to the pit to cross it. Not finding these in later rooms will cause you to be stuck, so if you are out of ideas, look for these, or [spoilers].
Stop and Stair:
Don't bother going upwards, you can always go down the loop. You are looking for a yellow room, so go down untill you spot one with an arrow in it.
Endless Eight: Go around the loop, untill something different happens when you come back to the starting stairs.
Before the Hub/Close to the Hub: Nothing of note here for you yet, unless you are very observant on the way in.

Details about the Hub in Help 2, but I heavily advise reading it unless you get stuck.