I was lucky enough to get into a Westmarches version of DCC run by Eric Vulgaris, he also did a DCC twitch show "Jungle Crawl Classic" that has a few episodes if you want to get a feel for the play, here's the playlist of that https://www.youtube.com/playlist?list=PLJ0snHDJGuC1vep_cPOlTSay9XvEtrX8P
I guess the only thing I'd really advise/recommend is definitely give players multiple characters to start. Lvl 0 characters basically die if any monster sneezes on them. It's a really interesting system though, good luck! Also, if one of your player's wants to get into the cleric/mage stuff..... I'd caution them because that stuff if quite different from say D&D 5.0/4.0/3.X style of things. And you don't really "start" with any characters like that. (at least to my recollection). Finally, embrace the randoms. Get buy in for the randoms. Those weird whatever skills your level 0 fisherman starts with that never feel like they pay off will at somepoint, and its a great moment/bit when they do.