Basics in Homeopathy

I am new to homeopathy and really interested in knowing the basics. i have read dilution and sucussing. Although it is understood and accepted that homeopathy works well, the way it functions is kind of difficult to understand. the following are some of the doubts that i have.

1) why is it that more dilute a remedy, the stronger the potency? i have heard when a homeo prescription is more dilute , it acts 'deeper'. what is the scientific explanation with respect to the 'vital force' or our energy of the immune system? Since there are fewer molecules of the medication in dilute remedies, it is intuitive that it creates a lesser effect (unlike what is stated in study of homeopathy).

2)this also makes it clear that C potencies are more stronger(since more dilute) than X potencies?

3) is homeopathy all about instigating the vital force to draw its attention to the problem in question? according to what i have undestood, homeopathy is all about taking advantage of the vital force or immune system to conentrate its energy in the part of the body or part of the 'mind' of the individual where there is a problem

4) what is the difference between indian and german medicines in homeopathy? i went to a homeo drug store and they asked me which make did i want. he said both are the same in effect but german medicines have better concentration etc etc( pretty unclear)