Study online is fine but you will not be granted ED visa ED visa is issued for studies in thailand and in classroom only

There is no set rules or requirements they change depending on what IO on the day wants from you some say you need this and that but different officers want different this a that

@Steve *******

one would be so lucky to receive a 2 inch extension for just 1900baht how good would that be 🤣🤣🤣 have a great day

Just get 60day tourist visa in your country before departure and have zero

headaches when your in the kingdom Chokh di snuk

2 times only by land border but by air it's not unlimited but there is no written law on how many times you can enter by air but as always in thailand it's all dependent on the IO infront of you at time of entry when you show to many entries in their mind they grill you over it never any guarantee with these guys

@Stephen ******************

it's matter of fact I do personally know someone whom has sat in immigration waiting to be sent home whom was denied entry for overstays and also to many visits under thai law so there is one you can blow out your rear and my thai partner and i just departed the kingdom last Monday to return back to our second home for a short stint and returning to the Kingdom with my thai partner in September as we are attending a wedding of a family member here in Australia so you can probably blow that one out aswell so it's not a bar stool story as you say it does happen often in contrary to your belief but than again people like you probably still believe in the tooth fairy 🤔

You can enter should be no problems but I still can't believe people have visited thailand many times and know the limits of the visas or visa exempt they have for that visit but still to this day they have overstays there zero excuse for that unless you are severely ill or dead you already know the rules abide by them or one day you find yourselves sitting immigration waiting for a clearance for them to send you back home its all dependent on the IO infront of you remember you are in their country and its theirs rules not yours Chokh di

You already answered your own question keep going back until the IO says no

You will be ok not a problem 👌

Take plenty money and your gold chain 😂