If you have traveled to the Philippines you will understand what it is..
It's a website or App where you must register your intention to enter the country before you travel..
It's only a proposal at the moment and the Thai government released some information about it in the media with a very optimistic date for implementation but that's already been postponed..
Just ignore it and there will be plenty of information about it once it's actually rolled out including a trial period where it won't be compulsory.
Use the Agoda hotel booking website or phone app..
You can search in your price range and read hotel reviews as well..
You can use filters for things like hotels with swimming pool..
Also has a map feature to check location..
Make sure you are walking distance to the beach and plenty of restaurants and bars.
Start looking around 1500 Thai Baht (about $65 Australian dollars) per night and see how you go..
There are cheaper options and many much more expensive options but that's a good starting point for 3 star hotels and you may even find a couple with pools for that price
It's a typical government thing and Thailand do this often.
They throw out an plan or idea to the media with an optimistic delivery or build date and then once they look carefully at what's involved they have to revise or change plans..
There are very limited work opportunities in Thailand for foreigners..
And you need an employer to sponsor you to get a work permit even for the very limited opportunities available to legally live and work in Thailand..
If you are a good English language speaker and especially if have some teaching experience then that's one of the very few job opportunities that are available in schools as an English language teacher.
There are others in highy skilled IT or management jobs for foreign companies in Thailand but you need the have experience and relative skills of course for those.
Salaries are generally low except perhaps for very specialized skills and jobs..
Good luck but you will struggle to find anything at all.
If you are asking can the visa exemption entry be extended ?
Then the answer is yes.
You can extend 1 time at any Thailand immigration office and pay 1900 Baht for 30 day extension..
If you overstay your visa exemption then you must pay a fine and the overstay will be recorded against your passport and that could affect your future entry to Thailand.