im new also so i dont know that much. but before you move around too much i recommend that you locate an npc vehicle rental. look by the name or icon. then travel there and rent a speeder. i had to walk around the whole city(nearly 12 hours) before i was informed to do this.
"Our OOC selves are the manifestation of our IC's mind, morales, and conscious. We are the little voice inside of their heads that tell them what to do and how to think."
To move to another city, you need to move to the very edge of the city you are in, in the direction you wish to travel. Then you can select "cross-terrain" on the travel interface, and move to the next adjacent planetary square. Rinse and repeat until you are at your destination.
I dare you to make less sense.
Are you a newbie, or do you have access to newbies?
Not to mention that unlike with space ships or vehicles (where you have fixed values and have just minor speed differences because of different in piloting skills), your ground travel time depends greatly on your speed skill. The following is just a rough estimate, but travelling an empty city will take you from either 10 hours (skill level 0) down to 40 minutes (skill level 5).
The cross-terrain time is also influenced by this.