Your Lakka Box and your Computer must be connected to the same Network. Please use an Ethernet wire or configure the Wi-Fi connection. You also need to enable SAMBA in Settings->Services:
Open your File Browser.
In the left column, you should see a Network icon:
Unfold this Network icon, and see if Lakka shows up.
If Lakka is there, clicking on it will lead you to a list of folders:
Copy your games under the roms folder. This step can take some time, as the games are transfered to the Lakka Box through your local network.
It is a good idea to start testing a Super Nintendo game, because they require no BIOS to run.
We recommand games from the no-intro sets, because they are clean, tested, and will scan properly.
Using your joypad, go to the last tab with the + icon.
Choose the directory to scan. If you added your game directly to the roms folder, then just choose Scan This Directory.
Yellow messages will appear at the bottom of the screen, informing you about the progress of the scanning task.
Once finished, you will see a new tab at the right end of the menu.
Go to the new tab you just created. You should see your games in the list.
Select the rom you want to run:
The game should be starting: