does anyone know an app or a resource to learn words such as prepositions, conjunctions, etc?

i.e. words such as

and, or, under, above, over, for, from, by, etc?

preferably with whole sentences including a spoken version for pronounciation?

www.thai-language.com has a vast resource of prepositions. If you have trouble finding them you may want to search individually for the words and read / copy / practice the examples provided.

doubt there is a specific app or resource for that, rather there'll be individual webpages with lists of them

but you could use thaiflashcards.com, create a flashcard for each

CHECK THIS OUT!!!!

http://thai-language.com/id/131723

ข้างหน้า khaangF naaF ahead; forward; in front of ข้างบน khaangF bohnM above; upstairs; on the upper side ข้างล่าง khaangF laangF below; under; downstairs ข้างหลัง khaangF langR in back of; rear; behind; back; behind

tons more but couldn't paste them

L-lingo.com seems to have lessons on this, a few free lessons and paid advanced ones

I dunno, hard to trust Karen.

Thanks for all the ideas.

The problem with the grammar explanations and others is that I won't remember much of it if I try to learn.

I'm not a grammar person - I cannot learn grammar.

I have won prizes for orthography and use of language in both French and German, and in both languages I am unable to answer grammar questions but I will write everything correctly.

For Thai, I really need full complete sentences to memorize, and Thai being tonal, it is necessary to include the proper sounds too, not just of the word itself, but of whole sentences to see how the word is pronounced when said within a sentence.