What visa options are available for my husband while I work in Thailand?

Another question: if I’m working legitimately in Thailand what are the options for my husband?

1)If he isn’t working is there a visa that means he can stay with me whilst I’m working?

2)would it be possible for him to get student visa to learn Thai whilst we are there?

3) how likely is it he will be able to get legitimate work that will qualify him for a work permit - I’d heard that it is pretty difficult and that the student route might be more realistic ?

Any advice much appreciated!