There's two ways.
One: go onto YouTube and search "Homestuck act 1 part 1." Then click on the video that says act 1 part 1 read through.
If you watch homestuck then the people who do the read over will make it look like a tv show. And they will read over it. The narrator, the people and the trolls. This way you can get a better understanding of how they sound like.

Two: if you wish to read the comic then just go onto the bio of the first read through video and they will have a link to the first page of the comic.

( hello. Hopefully you understood this. ^.^ hope it's helpful)