i don’t get it…
if you managed to install MAMP (you say you could enter “localhost:8888/”), have you tried just clicking on MAMP button (in your dock, or in “Applications/MAMP”) ?
Then you should get your favorite browser opened, url like :
“http://localhost:8888/MAMP/?language=French” (well i’m french but i guess you could get something like : http://localhost:8888/MAMP/?language=English“)
after that, just keep : “http://localhost:8888/” as you usually do to get your directory ….
.when clicking on “CMD” + “i” to get info, on your MAMP folder : what permissions do you get? (here i get : “Read + Write”)- not htdocs folder. if you don’t have permissions enough, maybe trying some recursive linux command (something like “chmod ugo+rwx -R *” but i’d highly recommand to check on the web ….. i’m not good at this, sorry)…
what i mean is that : maybe “it says” you got “Read&Write” permission on htdocs, but are you sure you have the same on “MAMP” folder ?