Nowadays one can go to Post-Secondary school to learn photography, there are plenty around.
If there aren't any photography courses at the nearest College or University, you may look for a Photography specific school, their information can often be found in the telephone book or Photography magazines. Of course, Photography magazines and related websites can offer plenty of useful articles for a lot less than a course.
Another choice would be the local Photography club found in many communities, whether they are full of amateur photographers, professionals or both, you'll find out your first visit no doubt.
An old way of improving your photographic skills is to apprentice with a professional or at least go on as many photo shoots as you'd be allowed to.
This way may not be as popular in certain parts of the world though.
An important thing to remember is that not all schools are of equal quality, not all magazines or websites are of equal quality and not all people who call themselves professional photographers are of equal quality.
So treat lightly and assess if you are getting your monies worth or if you are wasting your time.
Sometimes one can improve a level in their skills by reading the manual that comes with the camera you buy and checking the websites of companies that make cameras.
If you're game, a good way to improve a level or so is to practise, practise and keep practising, take note as often as you feel is needed while doing so and take notes when reading good quality photography books too.
Now, choose your path and go and enjoy.