www.guiacampingfecc.com
Without a doubt, the FECC (Spanish Camping and Caravaners' Federation) has the best information on campsites in Spain. Designed and sold by members of camping and caravaners' clubs, this annual guide has the most complete information on campsites in Spain, Portugal and southern France; even the official Spanish National Tourist Office guide isn't as comprehensive. Listings include websites, GPS details, high and low season rates and the chance to rate the campsites you stay at.
www.guiacampsa.es
The website of the CAMPSA road map and services guide. The site features a handy route calculator that calculates mileage and travel times; route calculations also include instructions on how to get through towns and end up on the right road.
www.inm.es
The web page of the Spanish National Weather Office...for the latest seven-day forecast, click on the area where you'll be travelling.