Allow me to present a sample chart of some of the various changes.
Now let's apply 濁点 and watch the the sounds change to this:
With the above exceptions, the rest of the applicable 平仮名 follow the same pattern of addition and change in sound. For all the uses ゛ has, though,゜ only has one known one with the h family of 仮名, changing them from h to p sounds. Kinda strange, but at least it's only one more thing to learn with it, and less is always more, with how much you gotta learn.
If you need a bigger helping to grasp the changes, please turn your attention to this chart
Obscure(key word here) usage notes:
濁点 are also used in written language to help enphasize a word(and when I say written, I mostly refer to hardwritten, as there are no conventional ways to use them this way in typed form)
On some occasions you'll also see this iteration mark 「 ゝ(平仮名)/ヽ(片仮名)」indicating you repeat the
An iteration mark also exists for Kanji as well 「々」, also indicating either a repeat or altered intonation pronunciation of the preceding Kanji , depending on the Kanji used. This particular mark will appear more often in your studies, so keep it in mind as you learn more about Kanji.