wife wants to go on a trip to Barcelona, she is 18 months through the first visa second one has to be applied for in jan to take to 5 yars
so can anyone explain what , where , how, we get her a schengen visa to go for a long weekend to Barcelona Spain

any and all info is needed ,
how long they last, whens best time to apply before she goes, can they start the day you go,
where you get them etc etc etc

thank you