If they are fairly new at surf fishing and you just want to put some fish in the cooler, use double loop bottom rigs with a #4 hook and a 3 or 4 ounce bank sinker baited with fresh shrimp pieces. You should do well catching croaker, Sea mullet and maybe a few spots and Pompano (if you are going a little latter in the season).
If you want to try some light tackle casting for blues, I recommend the Sea Striker Gottcha plugs or for a little more distance on the cast try a Maria jig or a Hopkins spoon.
Another option if you want to go for a bigger fish and don't mind waiting or getting shut out, get some Capt Lupton
Majik Red drum Rigs and bait 'em up with cut mullet chunks.
Hope you catch 'em up!