Once you've copied all your games, press 1 to download covers for your games.If you have game discs, insert each disc and press + to copy the game disc to the USB drive.Go to the Wii menu and launch the new USB Loader GX channel.If the Wii is standing vertically and you're looking at it from above, the USB should go in the slot on the left, the one that's closer to the edge. For example, you might have the structure /wbfs/Mario Kart Wii /RMCP01.wbfs. Gamecube games are similar, but the file is named game.iso (literally that). To add a game, make a folder named Game Title inside either wbfs or games, then put your WBFS file inside it, named GAMECODE.wbfs. Create a folder on the USB named wbfs for Wii games, and a folder named games for Gamecube games. If you already have game ISO/WBFS files, you'll need to do this step.
Install the WAD you downloaded before in the wad folder using the on screen instructions.