Also, it really depends on what the tutorial is about.

There's a difference between a tutorial on how to set up a wordpress on a shared hosting or how to add aditional debugging capability to kernel application core switching routines by patching the linux kernel.

In the first example, "unzip it" might need an additional explanation on how to do it in the command line... in the second,.. well... if you can't even unzip a file without the tutorial, you won't be able to use the software anyway.