COM for newbies

I am wondering where the best place to learn COM(vb6.0) is.

buy a book called VB COM..by Thomas Lewis..
it's a Wrox book..look up their website..
they have a sample page ..Table of contents..etc..

I have wasted money buying the wrong books and
I would recommend this book as one of the good ones..

cost about 35 dollars...

well worth it..solid fundamentals..simple words..
good reading...

I take my time picking books now..and this one will help you..

Yeah, Wrox published several books called the VB COM Series, which includes VB COM and VB6 MTS. They are good books and moderately priced.

substring.

are there any good websites about it?