starting MAMP at startup without entering password
Create the following AppleScript in AppleScript Editor
do shell script "/Applications/MAMP/bin/startApache.sh &" password "YOURPASSWORD" user name "YOURUSERNAME" with administrator privileges do shell script "/Applications/MAMP/bin/startmySQL.sh > /dev/null 2>&1"
Replace YOURPASSWORD and YOURUSERNAME with the proper values, then save it as a run-only application (.app) to keep anyone from being able to open the script and read your password.
Finally add the application to the autostart list