What's with /dʒ/? A difficult consonant sound

From my experience as a teacher, I can tell you that the /dʒ/ consonant sound poses one of the biggest challenges for Spanish speakers pronunciation-wise. However, it is not a complex sound to produce. Actually, the difficulty lies in the fact that this sound is not used in Spanish, and so we need to learn it from scratch.
In general, Spanish speakers mistake it for the sound /ʃ/, the sound in lluvia or shopping. /dʒ/ does share some features with /ʃ/, but we need to add (1) vibration of the vocal chords and (2) an "explosion".
These videos will help you produce this sound:

These are some of the words that include this sound:

/dʒ/ job /dʒɒb/ bridge /brɪdʒ/ joke /dʒəʊk/ Jim /dʒɪm/ message /ˈmesɪdʒ/ just /dʒʌst/ enjoy /ɪnˈdʒɔɪ/ January /ˈdʒænjuəri/ gender /ˈdʒendə(r)/ danger /ˈdeɪndʒə(r)/ image /ˈɪmɪdʒ/ judge /dʒʌdʒ/ Jamaica /dʒəˈmeɪkə/

Now practice reading these sentences aloud:

❧ Jim enjoys danger.
❧ Your job's a joke.
❧ I went to Jamaica in January.
❧ I've just left her a message.