You have to go to "CHARTS" window and there to folder "BASIC CHARTS". AmiBroker is formula driven. So in order to see price or data in general you have to apply a formula. "CHARTS" window actually is the section where all your formulas (for charts and any other use cases) are located. It was named Charts window but not Formulas window or anything else because of many people (aka new users) having problems to find a link to applying charts.
AmiBroker are not a data vendor.
You have to get the data either by importing it yourself (see ASCII import), or by using AmiQuote or by choosing a streaming source in File-Data base settings-Data source. For any missing vendors offering API access there is AmiBroker ADK (also see plug-ins forum section) to develop plugin for connecting to such additional cases.