Building Your Colony Deck
To get to evacuation play, you must already have at least one starter pack. Instructions for buying a starter pack are located here.
While you build your colony deck with the cards that you own, the deck that you build is currently irrelevant to the evacuation itself as you will be given the standard Military Crew regardless. This will be changed so that you will use your built colony deck early in September.
After you log in, there is a > > > > > GAME link in the upper right-hand corner. Clicking on it gives a menu with Launch a new Evacuation as the first choice.
When you launch a new evacuation, you are first presented with the launch screen above that allows you to select your origin card, ship, equipment, officers and crew (counter-intuitively, you want to go from right to left). A second page, reached by clicking on Switch to Cargo circle will allow you to select your passengers, cargo and escorts.
Once you are done choosing, click on the Launch button. You will find yourself flying through space. Click on Begin your Adventure on the right side of the screen to initiate Station Approach which begins the real-time evacuation.
In the very near future, you will instead be directed to where you can investigate and alter your crew before Station Approach.