Short answers, pulled from the story.
The Spanish Inquisition began when Pope Sixtus IV issued a papal bull on the 14th of February 1536 authorizing its creation. The first two men chosen for this role were Miguel de Morillo and Juan de San Martín, who arrived in Spain on the 27th of September 1480 to begin their work.
The primary targets of the Spanish Inquisition were conversos suspected of secretly practicing Judaism and moriscos who converted from Islam but maintained Islamic practices. Estimates suggest around 150,000 people were prosecuted during the period with only 3,000 to 5,000 individuals executed mostly by burning at the stake.
The Spanish Inquisition depended almost exclusively on the confiscation of goods of the denounced without a defined budget. A treasurer reported to Charles V in 1524 that his predecessor collected ten million ducats from conversos while the Suprema claimed over 700,000 ducats for the royal treasury in 1676 after covering its own budget which was just 5% of the amount seized.
King Philip III ordered the expulsion of all Moriscos by 1609 taking only what they could carry without money or jewels. The War of the Alpujarras between 1568 and 1571 led to the forced dispersal of about half the region's Moriscos across Castile and Andalusia before this final decree.
Trials aimed to extract confessions often using water torture the rack or suspending individuals by their wrists with weights tied to their feet repeatedly raising and dropping them. Confessions occurred publicly at autos-da-fé where sentences were read after parading the accused.