Im experienced enough i guess.Not all fish can be kept with corals,either.but you probably know that.anyway,you will need a good filteration system,stable water conditions because salties are more sensitive to change so basically you should keep the temp,salt,ph and so on the same.Next you should have a protein skimmer for good results.you need to know what fish to buy.For starters you might want damsels,clowns,blennys,cardinalfish,chromis,hawkfish,wrasses,and possibly dwarf lionfish.you might also want to put feeder shrimp in there and let them breed so the fish will have a snack.of course you will still need to feed them what ever special food they require.Skimmers can be expensive,ive seen over 200$.most are like 100+.I just you might also want a biowheel.pm me for more info.