Lots of good advice here but the only thing that makes it as difficult
as it sounds is that you don't have anything to practice on so you
have to get it right.

I am no expert but have done a good deal of passable work and found
it fun and challenging to learn how do to it.

It should be noted that silver solder comes in various melting temps
and sold as hard, medium and soft to facilitate attaching little
things to big things so one doesn't melt while soldering the next. I
would opt to the soft side here.

I am not familiar with using Borax and use Easyflux as has been
mentioned. As you probably already know, the key is getting both
pieces to solder temp before any brazing can take place. This is some
shade of red for all three solder types.

Some clever person figured out where you live by your spelling but for
what it's worth, I have purchased my supplies from Rio Grande. If
nothing else, you can browse their catalog for lots of good info.

I use a hardware store butane torch for large stuff and a mini-torch
for small stuff.

Good Luck,

Jack