Barcelona is very good on your own exploring. We provide you with a guide and a language guide for free download on our download page.
You can also explore Barcelona with our tour proposals very well.

But an organised tour enables a different perspective on the city, an experienced Guide will show you many details of the attractions of the districts of Barcelona that you may would otherwise have overlooked.

On Barcelona.de you can book tours with English speaking guides. The tours are on various topics. You have the choice between a private tour or in a group.
Booking guided city tours.