For those that want to learn Portuguese I decided to share the information that I found while looking for information about Portuguese classes that I researched for someone that wanted to attend these classes.
There are cursos de Português Língua de Acolhimento (PLA), for immigrants in several cities, you can click here to obtain the list of all the locations. You can then contact the school where they are taught to know when they are scheduled
On ACE I found an online platform for learning portuguese, its a platform created by the government.
The Employment Agency (IEFP) also has an online course, that you can apply to
The ACM page has information about learning Portuguese, this page may be useful for other things, has they deal with people from other nationalities living in Portugal.