Are you having difficulty with those umlauts? And is the "ch" sound a challenge? Then "The Sounds of Spoken Language/German" website is for you. Here you'll find video clips to accompany an array of various sounds. Since these are categorized under phonetic linguistic terms that might be unfamiliar, look under "Vokale", then "Monophthonge", then "Vorne" and then click on /y/ for examples of the ü (as in müde), /ǿ/ for examples of ö (as in böse), and /e/ for examples of ä (as in spät). And practice, practice, practice! Űbung macht den Meister!