Of course, you can discover Strasbourg by booking a guided tour - either as an individual or as group or family. There are different providers offering various tours - but you surely will pass by the main attractions. Some of the providers are listed here.
Office de Tourisme Strasbourg - Tourist information Strasbourg
The tourist information of Strasbourg provides several guided tours for individuals and groups.
For individuals:
For groups:
As small groups or individuals, you may borrow audio guides at the tourist information. This audio guided tour lasts about 1h30 and costts 5,50€ (full rate) or 2,75€ (reduced rate). They can be borrowed on 365 days of the year between 9am and 7pm.
Guided tours by Happy Strasbourg
The provider Happy Strasbourg offers among other things free tours or tours on donation basis: first, you don't pay anything and in the end as much as it was worth for you. This tour takes place from April to October and in December at 2.30pm everay day, the meeting point is in front of the cathedral. It endures about 2 hours.
Additionally, Happy Strasbourg provides other tours:
These tour are available in English, French and Spanish, the price is dependent on the groups' size: