The rules are really quite simple... if there's a solid yellow line, you can't park there. If there are diagonal yellow lines on the road, then you can normally park there after 18:00, (and until 9:00) the exact times for that particular loading zone will be indicated.
Obviously, stay clear of anywhere that there is a blue/red no parking circle (e.g. garage doors, driveways, etc.
In Marbella, if you get in there before 9:00, there are tons of parking spaces on the streets, but come 9:10, you're probably going to end up circling the city for up to 40 minutes to find a space.
If you go to the municipal parking lot (up the hill from the Burger king IN town - not the one out near the Golden Mile) you can get a monthly parking pass for a full 12 hours (you chose the time) for only 75 Euro. Or park there anytime you want for 120 Euro.
If you need to come into Marbella after 9:10.. I would strongly recommend this.... especially during the summer months!!! After all, time IS money!!
Happy parking!!!
Eric Marsella
MARS I.T. Services
www.marsspain.com / +34 667 698 833