Apprenticeship and workshops in the Renaissance

http://en.wikipedia.org/wiki/Raphael#Workshop
This site is about a artist called Raffaello Sanzio da Urbino. But we often heard only the name Raphael. He was a Italian painter and architect of the High Renaissance. He, Michelangelo and Leonardo da Vinci together form a traditional trinity of great masters of that period. Raphael had a workshop with fifty pupils and assistants. It can arguably the largest workshop team assemble under any single old master painter.
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http://www.yesnet.yk.ca/schools/projects/renaissance/main/bellini.html
This site is about a man called Giovanni Bellini. He was the most important painter active in Venice of the late 15th Century. He also had a sister, and she was a painter, too. When he wasn't a popular painter. He worked in his father's workshop and he was an apprentice. When he was good at painting. He taught Giorgione and Titian, they also outdid their own teacher later. After he died for a while, his greatest works were destroyed in a church fire in the year of 1577.
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They life bertween them and us were very different. They had to leaned by them self if they want to learn some special crafts. And be like a servant under the master. Now, learning crafts are not very difficult. You can pay money for it to learn. And teacher will be kind of you. Our art class system just like cram school, not like being like a servant before. However, they most important things to learn crafts is not these. Most important is to workhard. It is a truth that will never change.