A lot of uncertainty after the tutorial

The tutorial was so amazing well designed and easy to understand, but now after that I’m just not sure what to do?

Okay, first of all I will do the Awakening step of the wisdom card, that’s fine!

Then I have to place the Starting Slumber tiles (gained in the tutorial) and place them accordingly, with the Dreamers in one of the two starting places. The red Slumber cards get shuffled and the rest of the other „Slumber cards“ (the grey ones) too?? I don‘t fully understand the difference between those two types of cards. Red Slumber (with the name on the back) and „other slumber cards..? :(

Then, if I‘m instructed to draw a slumber card (I guess from the „Red ones“) I resolve it and if its an Entety, I switch To the Two Starting Sluber cards on the Dreamscape board and resolve the encounter?

And how does the “other“ Slumber cards come into plays (the grey ones), which expand the Dreamscape map??) Sorry, but I really don‘t understand it :(

Next are the Dreamgate tiles. Do I understand this correct, I collect them in one of the envelopes provided and can enter one of them as I wish. As far as I meet the requirements (keys, right location etc.)

If I enter one of the dreams, I get rid of the slumber map and replace it with the Dream?

And then after the dream, I put the two Slumber Starting tiles on the Dreamscape again??