Go to immigration and get a letter take it to dlt and show your independent drivers permit and do the online test pay your 300baht and get your licence thats how I got mine
It is straightforward and easy to get just make sure you have a genuine resident situation and is easy if you're lucky enough to have a thai wife you only need 400k in the bank
Apply for 90 day non o visa in home country when you get here go to immigration and get a residency certificate and ask for a letter for the bank to open the account
Get a non o visa for 3 months get to thailand and get a residency certificate then go to immigration and get a letter for the bank marry the girl and put
*****
0 baht in the bank and you will then apply for marriage visa