Touch screen pen(stylus pens)

Yes! I’d suggest that you should tinker with Mobile Microscopy! It is indeed helpful and you can screen alot of minute things that you are curious about.
Have a look at this thread to get insights on what I am talking about.

About the current setup, keep us updated here with the happenings and the results that you come up with and also ping if you are stuck somewhere, as you did earlier!
Good luck!