The Bash can show all kinds of information in the command prompt. For better readability you can use colours in the prompt to separate the parts.
The following prompt contains user name, machine name and current working directory. It works on either white or black background.
export PS1='\[\e[35;1m\]\u\[\e[0m\]@\[\e[34;1m\]\H: \[\e[0m\]\w> '
This article on the superuser forum shows how to write a function that adds a new directory to your path only if it is not yet there.