In one sentence: learn the program.^^
sorry for that, lets try:
moving cars: use mainscript "follow" in scriptbank/people for the car-entity and place waypoints where the car should move, but maybe you have to change fpe-file.
entered building: construct buildings out of segments and prefabs.
animations: depends on what you need. there are some things possible with stock-animations, but custom needs 3d-abilities in other programs.
intelligence: learn basic scripting and search through the manuals and tutorials. look through all the scripts in scriptbank and understand what they do. use darkAI scripts for intelligent enemies or team-members. not much more to say.
even if advertisement says, this is NOT a one-click-constructor when you look deeper into development.
try google-forumsearch at the bottom of each page using "FPSC+keywords", very usefull.
gz