how to cd into a directory with a space code example

Example 1: how to cd to a directory with spaces

Write the beginning of the directory and press "tab"

this will fill out the rest

Example 2: how to cd into a directory with a space linux

Either you put quotes around the directory name 
( cd "/Users/niho/Desktop/Reader 0.5" ) 
or you escape the directory name 
( /Users/niho/Desktop/Reader\ 0.5 ). 
As others have mentioned, quoting the path or backslash-escaping the 
spaces will work.