Making Qsys Master Component

I don't think there is any tutorial.

Altera gives you some example/templates you can follow: https://www.altera.com/support/support-resources/design-examples/intellectual-property/embedded/nios-ii/exm-avalon-mm.html

Beyond that, you're largely on your own. To save yourself some grief, I would recommend familiarizing yourself with the Avalon Verification IP and take the time to construct a good testbench. https://www.altera.com/support/support-resources/design-examples/design-software/simulation/exm-avalon-verification-ip.html

Depending on what you are trying to accomplish, the Modular SGDMA is another good resource to extend/borrow from: http://www.alterawiki.com/wiki/modular_sgdma