Cube your pork into pieces that will comfortably fit onto a skewer, and place them into a bowl that is large enough to hold all of the pork easily.
Mince your garlic and add it to your bowl, along with your salt.
Add the juice of your lemon, the olive oil, and add in your herbs. I prefer to use fresh herbs and bruise them a little before adding them so that they'll give off more of their flavors. If using dried herbs, you can use smaller quantities.
Mix all of your ingredients together, making sure that the meat is well coated in the pork souvlaki marinade. Cover and refrigerate for at least half an hour. Several hours is even better. (I left mine overnight.)
When you are ready to grill your souvlaki, remove it from the pork souvlaki marinade and push your skewers through the pieces of meat.
Grill on high heat, turning occasionally until the meat is cooked through and browned as desired.
Notes
This marinade also works wonderfully for marinading chicken.When adding salt, I usually only add a pinch of salt to the marinade, and then salt the finished, grilled souvlaki. That way everybody can adjust the saltiness to their liking.