Order of adjs

[belly_ttt]

I'm looking for a site which provides advanced free tests
or
I'm looking for a site which provides free advanced tests
?
Why?

 

[Tdol]

I would use the second as you are looking for advanced tests that are free, a subset of advanced tests. ;-)

 

[belly_ttt]

I wonder which category free is in , Tdol ( opinion, origin, color, age, etc.)