The letter (Shin) sounds just like you'd expect: it has the shhhhh sound you use when you tell someone to be quiet. In fact, the name of the letter sounds similar to the English word shin--that part of the leg below the knee that hurts so much if it bumps into a coffee table.
We'll imagine the letter as a sheep!
Now let's try some reading practice again.
(shem) - Name
(sheleg) - snow.
(tsel) - Means shadow
(beitsah) - Means egg!
(tsom) - Means a fast in the sense of not eating for a long time.
(matzah) - The famously dry, crunchy cracker-like bread that Jews eat each year for eight days!
(pesach) - Passover, the holiday where Jews eat matzah!
Now let's look at the other version of the same letter...