USB Host Shield

Does exists a complete tutorial for Usb Host Shield?
I'm searching on web but I not find informations about IN2, IN3, OUT5, OUT6, TMI pins

Many thanks

There is some good information on the product page:

On the "Documentation" tab of that page, is the following:

The shield features several TinkerKit input/output and communication interfaces. Connecting TinkerKit modules can simplify the creation of a project or a prototype. The on-board connectors are :

2 TinkerKit Inputs: IN2 and IN3 (in white), these connectors are routed to the Arduino A2 and A3 analog input pins.
2 TinkerKit Outputs: OUT5 and OUT6 (in orange), these connectors are routed to the Arduino PWM outputs on pins 5 and 6.
2 TinkerKit TWI: these connectors (4-pin in white) are routed on the Arduino TWI interface. Both connect to the same TWI interface to allow you to create a chain of TWI devices.