May 13, 2020
May 20, 2020
I counted variations of the particle as one (ex: けれど [keredo] which functions like "but" or "however" has the variations: けど [kedo] / けれども [keredomo] / けども [kedomo]). I used to use the more informal sounding けど all the time (because I saw an art historian on TV use it when he was analyzing an artwork and I was trying to imitate conversational "smart talk" :)), but I noticed that my teacher would tend to use the more polite けれども, or けども, which has a register in between. So yes, on some of these particles, there would be some differences in the level of politeness.
Getting comfortable with particles was definitely one of the bigger challenges for me too, but I think with continued exposure to the structure of Japanese grammar and sentences, you'll start getting a more intuitive sense for them. がんばってください！
May 21, 2020
October 9, 2020
Just like toru e and ClaudiaR-sc5g say, particles are a real challenge to master! You'll come across many different particles as you study Japanese, the main ones being は (wa), が (ga), を (o), で (de), に (ni), へ (e), ね (ne), の (no) and よ (yo).
は (Wa), が (ga) and を (o) can be tricky to tell apart, but thankfully we've have recently released a brand new Level 1 Language and Culture course, with far more in-depth explanations on how particles work!
Here's the links to some lessons from the new course you might find helpful.
How to use は (wa)
How to use が (ga)
は (Wa) VS が (ga)
How to use を (o)
Hope this helped, and please let us know if you have any more questions!
がんばって ください！ (Ganbatte kudasai!)