Light Beer Brands

Liquor / beer brands in Spain?
Im going to Spain for spring break and I am wondering what are some easy, cheap brands obtaining liquor and beer in barcalona and Madrid. im thinking along the lines of light beer and a little rum (which will meet the expectations of a child 14 years of age). I need specific names and brands want a sweet drink rum (excluding wine, i cannot stand wine, except for champagne I like a lot)
BEER Cruzcampo LIQOURS Mahua (RUM IS NOT MUCH IN THE ISLANDS OF SPAIN) jyb (BUT ITS SCTTISH popular there) TORO, THE SANGRIA BRANDY BRANDY DE JEREZ RIOJA (Wine) 2002 MONTICELLO
Man Laws