Read "How to Brew." Since your first brewday is tomorrow, I'd recommend either postponing it or reading the older, but free, online version tonight/tomorrow.
Read, read, read. Watch YouTube videos. Listen to Brewing podcasts. Your beer will only be as good as your knowledge and ability to execute (recipe formulation and brewing technique). How much knowledge do you have of the brewing process?
Are you doing extract or all grain? My advice is to never leave the boil. Boil overs can happen while you're gone. Have a plan to cool down the wort. especially if you don't have a cooling system. I just put the kettle outside because it's pretty cold here most of the time. Get an infrared thermometer for contact-free measurements ... and make sure to pitch the yeast at the appropriate temp -- not too high. If you are using a plastic bucket carboy, get a proper spigot and install it into the bucket. Easy samples and transferring. Get an OG! Watch a video or two. And, as mentioned, read up on brewing a LOT. It's a fascinating combination of science, agriculture, cooking, biology, chemistry, physics, patience, sharing, and BEER! Go for it and good luck!
Welcome to the BA site and to this great homebrewing hobby. Reading HowToBrew.com is the best advice I can give you, but here is a link to other threads in this forum that also ask for 'newbie' help: https://www.beeradvocate.com/community/search/67410440/?q=newbie&o=date&c[title_only]=1&c[node]=8 If you are brewing an extract batch, you really have to be aware of what you are doing and be organized, and if you are brewing an all-grain recipe, you really, really have to be aware of what you are doing, and be even more organized. Not trying to scare you, but that first batch can be a challenge to get it right, and I want you to get it right so you have beer that you are proud of.
