Anyone got any tips for swapping auto transmissions by myself (without
helpers)?

I've got replacement (used) tranny+diff, floor jack & axle stands, and
Bently.  I'm also expecting to replace one or two CVs.

How best to support / lower tranny?  Any specially tricky bits to look out
for?  Things to be careful to do / not do?

If there's a web "how to" for tranny switching please point me to it.  Any
advice will be much appreciated.  This will be my first serious foray into
real maintenance, and I'm quite nervous!

Alan