MGP14 Modify Moto Gp Series

[senbei6]

Sorry but I'm new MotoGP Series modifications do not understand much and I am also Spanish. Is there any site or tutorial to show me how the mods and skins tracks I downloaded skins and several mods are installed but not to copy the folders or as is done so that it is discharged into the game. Example I downloaded this skin but the Legends / Bikes folder where the copy? Is the mixfile program that serves exactly?