Auto merge of #28401 - christopherdumas:beginners_manuel, r=Gankro
Auto merge of #28401 - christopherdumas:beginners_manuel, r=Gankro

r? @steveklabnik 

aidancully/rust,graydon/rust,GBGamer/rust,GBGamer/rust,aidancully/rust,aidancully/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,graydon/rust