When you turn the device on, it often defaults to where you ended off when you last turned it off. If will normally be a grayish color screen showing the last screen you were at when it was turned off. You can go to the preferences tab, and then scroll over to start up preferences, and that will give you some other options for what will be displayed when you turn your unit on. Your options should include 1) start where I left off; 2) ask for a destination; or 3) show the main menu.
Regarding the satellite issue, when you say "extremely long" how long is it taking to find the satellites?
Here are a couple of basic tips you can try:
1) Make sure at least weekly you are downloading the latest "quick fix" files via TomTom Home.
2) Make sure you are in an area that will provide good reception. For instance, if I turn the unit on when Im in my garage (which is the ground floor of a 3 level townhome), it will often take longer to find the satellites, than if I were to turn it off after Im out of my garage.