Greeting , my waif is ireland citizen and we live...

I would like to inform you that to obtain a visa to enter Ireland and then the residence permit and reside there fore 5 years at least then you can apply for the nationality. And about how to obtain a visa, you can check the following cases:
1. Tourist visa: in such case it is related to the duration mentioned in the visa.
2. Employment visa: meaning to get a job there, therefore the visa and residence will be issued for you later as a worker.
3. Investment visa: if you have enough money to invest in there, then you can obtain the residence.
4. Reunion: meaning to get an invitation from one of you relatives such as your wife, if she is from there.
5. Visit visa: meaning to obtain an invitation to visit your relatives in there, and you are restricted in a particular duration for the visit.
6. Student visa: after obtaining acceptance or agreement by one of the universities there.
7. Asylum: which requires being inside that country to obtain the refuge.