When I was more serious about keeping a car looking nice, the routine was to go through a complete process (clean, clay bar, touch up paint, buff/polish, seal, and wax) once or twice a year. This gets rid of swirl marks, blemishes, etc. I would then use a quick wax (i.e. detailing spray) to help maintain the wax and keep the car clean as needed and would do a good waxing every month or two.
I'm a bit old skool, so the wax I was using was typically pure carnuba which would wear away quickly and required constant attention. The newer synthetic stuff has gotten much better and will last much longer but I honestly haven't payed attention to the changes in the marketplace in the past 15 or so years.
Take some time and read through the Meguire's web site. IIRC, they had a bunch of very good tips on maintaining you car using the new synthetic products. There are a number of other sites out there as well that you can find and read.
I would caution you about always using a "polish" product. In old skool terms, a "polish" has a bit of grit to it and is designed to move the top layer of paint around and remove swirl marks. Constant use of polish can wear down the clear coat or paint and cause the car to start looking a bit ratty. You want a product for regular use that does not have any grit to it and is only intended to seal/protect the surface. Just double check that what you are using is recommended for the type of application you are using it for.
Then again, the changes in paint technology, car care products, etc has been staggering in recent years, so I could be completely off base and out of touch at this point (wouldn't be the first time
).