here's a tip don't conserve everything you don't need to make things optimally just go for it and get accustomed to different mobs levels and bosses don't focus on finishing or conserving just focus on improving and learning the higher floors and enemies then after you learn all the floors and enemy interactions game will be a piece of cake without challenges ( you can always misclick and die though )

and read the beginners guide its like 90 pages there is enough info there to help you out. also if there are any videos of new patches you can look at those I guess

the game is cryptic when you don't know the game and even after you learn it there is a lot of depth if you are doing 6 challenge runs I suck at those some people are really good at abusing mechanics. but even someone who is complete shit like me thinks the base game is easy so you'll get there. the base game isn't too hard it's just cryptic