fuzzies are about as EZ to feed as they come. many will simply feed from the water column (thawed mysis and BS+ are great foods). if yours is a bit reluctant, it will certainly jump on live ghosties (gut-load them with a good-quality marine flake food). condition the fish with live food for about a month, then begin weaning it onto dead foods (small bits of shrimp, fish, scallops, squid, etc.). get small amounts of these foods from the grocery store's seafood counter or fish market...the food is better an cheaper than at the LFS.
DON'T give your fish krill or carp (goldfish, rosy reds). small guppies and mollies are OK in the short term, but ghosties are better.
HTH