What is the process for obtaining a visa to stay in Thailand for a year?

It all depends on your reason to stay in Thailand.

Your local RTE website...

Check your nearest Thai Embassy or Consulate is the logical place to start

@Trenise *******

It’s not easy to move to Thailand for people below 50 years or not married to a thai. It could be some option regarding studies and work, but basically your option is to buy a Elite visa if you wants to live or stay longer periods. For up to one year you could at least get a six months multiple entries tourist visa METV. Used the right way it gives you possibility for to stay up to nine months if you do a couple of boarder crossings. For the last three months you might be able to do a visa run an get a single tourist visa which gives you 60+30 days or two boarder bounces which could give you visa exemption for 30+30 and 30 days. You’ll probably need an agent to transport you and help you with the last part. METV you’ll need to apply for at the Thai Embassy at home.

Nobody can answer that without knowing your age and nationality