Help (2 questions) >Revolution and my site

Hello all dear and respectable developers and members.
I’am studying on Modx. I am making my site. I removed wordpress just because I LOVE Modx. I am making a Undertaker fan site and want some help from you.

I have two questions:

1. I want a welcome page for my site where when visitors open and index opens a welcome page where only an "ENTER" link who redirects to my home page. And when they click on home page, it open my main page every time.(Hope you understand me).So my question is how to do this? If I create a welcome page, it may be index.php/html but I want my home page(main page) to default. >???????

2. I’m using new Mody Cool Revolution and I want wordpress like post thumb feature on my site. I don’t know how to this via TV or Spnippet. Any solution in detail ?

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I think these questions will help many newbies like me.