

Я начинаю понимать по-русски.
I'm starting to understand Russian.
Мне трудно понимать его акцент.
It's hard for me to understand his accent.
Ты должен понимать, что это важно.
You must understand that this is important.
"понимать" is in the lesson "Verbs 1" (Level 1), along with 15 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.