In Chart - Pivot table and Straight table, while writting expression you can find mini chart option.
To answer your first question - Yes mini charts are availble in personal edition. While writting expression in list box and the above mentioned chart you need to select mini chart option and then in mini chart setting you can defind the dimension against which the mini chart will get displayed and set some properties like highlight maximum , minimum value etc. Also note that Mini charts will not be displayed when exporting to Excel.
To see in detail refer Qlikview 11 reference manual page 470.