Works perfectly for me. Has to be renewed every couple of months, there are scripts for that.
And start doing your research, because with something like 777 on the wwwroot you will be hacked in no time (there are actually exceptions to that, but they are for grown ups so forget 777 for now).
For test purposes be sure to be behind router or enable firewall so that the test site is not accessible from the web in case of a collosal error like 777
I knew the meaning of chmod, but with 775 the user I use to log in asks me for the password for those folders, can I add it as belonging to that folder?