Find out about your local beekeepers group and go on a couple of apiary visits in the summer with them. Usually very friendly and knowledgeable.
However you will need to buy quite a bit of kit beforehand. I got my hives from beekeepers who had to give up and gave a reasonable donation to the beekeepers group in exchange. However be careful with hives that are advertised in the local paper or similar, as often their health status etc might be compromised. It is better (and safer for you and beekeeping in general) if you get your hives through a beekeepers group or have them checked over before you buy/get them. (Also hives get stolen quite regularly at the moment, and sold on where... to whom...)
Given the last few bad summers and a number of diseases that are around at the moment, nuclei or hives are very thin on the ground, so you will have to be patient. Maybe you could team up with an (older?) beekeeper and assist him/her for couple of years in exchange for some honey and learning how to manage bees, and then a nucleus will come your way a lot easier...
Also bees and beekeeping are not for everyone! Find out before you have your own bees and made quite a significant investment in kit! You will need a good couple of hours per week from April to September to check through your hives and deal with any swarms immediately, I check mine on hot days at least three times a day (they are in my field so can do easily).