Hi, I started the course on the phone and did not discover the"tips" section until I began to work on my computer. Suggestion: There should be an entry page to work through with the cyrillic letters.
Two suggestions regarding the phonetic examples you provide, as an English speaker: А а as [ah] in bus A is not ah if you use bus as an example. The correct spelling would be "uh" It's a scwha sound. Fall has an "ah" sound.<pre>
О о as [o] in ball</pre>
Again, no one speaking English would immediately think the sound in ball, aw, is o.
Thanks, enjoying the course and want to make it better for future users.