Here's an interesting Rick Steves audio on Barcelona
https://soundcloud.com/rick-steves-a...o-europe-spain
He is questioning 2 local tour guides and you may be able to hire one of them. I'm a big Rick Steves fan. When we went to Spain and Italy I followed his advice for everything including where to stay. I saved money by sometimes using his audio tours stored on my smart phone wearing headphones.
try this too
https://www.ricksteves.com/europe/spain/barcelona