Prefer and rather

[Pattana]

Dear Torsten

I have a few question to ask you,

1. how to use prefer to
2. rather than

however, last question that I asked you it's so clearly. I'm a glad that you always help me, and I'm not sure if you understand what I wrote due to my english is so badly. I wish you check my grammar as well, if there are somethings wrong.

thank you for your kindness.

regards

pattana