I would watch some lets plays, it will give you an idea of the warp mind of Eyamaz to kill all and how the mechanics work. Also look at my
Youtube channel for BnB Griefing list video and my shared google docs. It will advise you on what blocks not to use, which will attract creepers (mobs) until you have established a safe base.
My tested routine..
Gather food and more than +30 blocks of dirt.
Sky platform above 30 blocks (which turns into a sky base later down the line). In Plains/Forest type biomes. Near sea if possible.
Basic TIC (Flint) tools.
Food production, ie farm.
Smeltery TIC
This should keep you going for a while. But like anything in life.. good research is what you need. Youtube is a good source of information about BnB.
BTW welcome to the best Modpack for Minecraft and the hardest one.. lol