Looks like nobody has responded yet because this is a touchy subject.
OG is not legally available in electronic format. If you see it in electronic format, you are viewing an illegally created copy - and, if you use it, you are breaking copyright law. BTG does not post illegally-obtained copies of materials, nor does it post pointers to sources of such information.
The book is pretty inexpensive; I recommend you buy a hard copy. (Though, FYI, I don't think the explanations in OG 11 are any better than those in OG10.)
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