I see!
Well, back then when I learnt that particular program (around 2009), I had no pc to practice with but I was the best among every other students including those with their PCs.
How I achieved it was just simple.
I paid more attention and asked questions, drawing it in my notes which I had to beg the ones with their PCs to practice.
After about 3 days of training, I gained more knowledge more than everyone and started teaching others in my level.
You have a good phone which can play videos.
Go to YouTube and download videos on ppt.
Watch and learn.
Be ahead of others and ask questions using the videos you've watched. Don't tell your instructor that's it's from videos you watch before you vex him/her.
The world has changed for you to be saying that you don't understand.
You can equally download power point app on your android phone from the play store.