I don't know how to do astrology but use it a lot. I get kind of embarrassed telling people how I use it but I'll share it here.
For instance:
1) When DH and I were planning our wedding we consulted our amazing astrologer for a date. We told has all the point we would like to empasize in our relationship, and worked from there.
2) DH's company. We used it to set a date to incorporate on. Once again choosing the aspects we wanted to be strong in.
3) My company. I choose the aspects that suited my company then we picked the 'right' date and I registered on that date. Then another date to open to the public.
4) We do a 'reading' once a year for DH's company (and will do with mine now), to see when tight spots will be, what will be coming up, issues we may run into, good time to do certain things, etc... Maybe it's the astrology, maybe it's us, but things run fairly smooth for us, and we seemed prepared.
THese are just some different ways we use astrology beyond the everyday perrsonal uses.

Does anyone have any other uses that are a little different?
[edited to add: We have a really great astrologer that is in California. We are in Canada and consult with her despite the distance because she is so good. Expensive but good. I guess not expensive when you think of the background research she has to do.]
Oh, we also use it when hiring new staff solely for the purposes of seeing if their will be harmony between the new staff and existing team. I look firstly at their credentials than the astrology of course.