How many state capitols are thier?

Well, Francis there are 50. 

What kind of tours do you take?

I usually take a guided tour, as most capitols give them throughout the day. It's best to review the applicable website and call ahead to verify.  

What is the basis you use to rank the capitols?

The beauty of the art and architecture. Though originality is also an important factor, as is an observation deck and other intangibles. 

Is it capitol or capital?

"Capital” and “capitol” are homophones, which means they sound alike. They are also spelled almost identically. While the word “capital” has many definitions, the word “capitol” exclusively refers to a capitol building or buildings that house a legislature.

Capital: The word “capital” can refer to money, uppercase letters, the death penalty, and capital cities that house a seat of government.

Capitol: The word “capitol” always refers to a physical capitol building (such as the US Capitol building) or the area surrounding it (such as Capitol Hill).

To distinguish between these commonly confused words, ask yourself if you are referring to a specific building and the area around it. If so, use the word “capitol.” In all other cases, use the word “capital.”

BTW: They are both pronounced "ka·puh·tl"