Am studying Katakana at the moment.
Bob,
I am more than happy to offer some ideas on how to learn katakana effectively. I am presently helping another member of this forum learn hiragana in another thread, so I will post some of those ideas here.
Here is that thread. (My posts begin from post #27.)
I think he can find a Japanese language school (i.e. a school that will teach him Japanese language) that will sponsor a visa. So learning the language while trying to build up some connections here is not a bad idea. Coming here on a student visa and trying to find work is a bit problematic...
jref.com
First, I suggest you watch the following YouTube video, watch each katakana, pause the video after each katakana, and write each katakana ten times. Then go on to the next katakana.
But
writing katakana is more difficult than
reading it, so I suggest you try what I call 'dictation practice.' First, record yourself speaking single katakana. First record them in order, then record them in a random order. Next, play back the file and write down what you hear.
All devices (iPhones, laptops, etc.) have the ability to record sound, so you can record your voice on your device. If you need help on learning how to do this, please do not hesitate to ask.
Once you have mastered writing individual katakana, starting recording and then listening-and-writing groups of katakana in short words. As time goes by, you will be able to write more and more katakana at a single listening, until you can write full sentences just by listening to them once. (This is going to take a lot of work and practice on your part. Get started now.)
I can also give you a list of short katakana words to write, if you would like.