Go syntax, structs and slices

Go is small on purpose, so you can learn most of the language in a few weeks. Start with variables and :=, which declares and sets a variable in one step. Learn functions that return more than one value, for as the only loop, and structs (groups of named fields) with methods.

Then learn slices and maps, the collections you will use everywhere. A slice is a window onto an underlying array, with a length and a capacity. append may or may not copy that array, so two slices can end up sharing the same memory. Run go fmt and go vet from the first day to format and check your code.