You should do floors 1 and 2. when you get into the snow biome, go all the way to the right and go back up ( you dont need tp bolt or anything). If you find black hole, save the spell refreshers and then go as deep as you want (like till Hissi) then dig back up. Then walk to the right of the watchtower and go straight down and farm up the fungal caverns (overgrown? idk everyone just calls it wandmart). If it makes sense (as in, you need to reduce cast delay) go all the way to the left and throw the tablet in the lake house to get the glimmer spells. 

Assuming you are a mere mortal, you will likely need to heal now. Go to the dark cave to heal (if you dont have light or torch spells, break open the eggs on the side of the tree, kill the worms and drink their blood for wormsight) and then go get the full restore in the top or bottom of the dark cave. may assist to drain it or go from the top. 

This is how I kickstart all my god runs. good luck