Trouble with Installing WordPress on a MAC

Here goes, I followed the instructions to download MAMP (that was successful), I downloaded WordPress and all it’s files (that was successful), I moved the files from WordPress into the MAMP as instructed, now I see what the instructions are, but here is where I get lost, I am not sure how to do the next step which is localhost: blah, blah, put in some info and do the 5 minute install. Could you please help me to finish this process. In addition, in reading on the site i’m seeing that Go Daddy may not be the hosting that I should use for WordPress? Depending on the amount of traffic? Clarify for me?