There's a special client for reading Homestuck called "The unnofficial homestuck collection". That's a good starter, as A: The main site is down for now and B: it gives the experience of reading it as it was being updated. Theres also a YouTube series titled "Lets read homestuck" its an unfinished Dub of the comic, but it'll get you through the first half of the comic. Theres a podcast called "Homestuck made this world" and its with two people, one read it archivally and another serially, and they have a plan made for it (the podcast is finished, yet you can follow the same plan or find others online). Hope this helps.