So, I've been playing KSP for almost a full year now and have always loved building space stations. When I first started the game, my first big goal wasn't actually to land on the Mun, but to build a giant space station. The first one I built had no particular purpose, I just made it to look cool and have something to brag about. It wasn't until much later that I actually started using them for a purpose. I placed a relatively small station out near Duna before I sent my first manned missions there. Its purpose was to be able to act as a lifeboat in case one of the missions went wrong. It had a decent amount of fuel onboard that would hopefully allow a stranded crew to be able to come home. The next time I built a station for a real purpose was when I started my first "science mode" save. After sending about 6 missions to the Mun to collect me some science, I decided it would just be easier to have a small SSTO lander attached to a large refueling hub in orbit around the Mun. I would periodically send missions out to the station to refuel the station itself (I hadn't unlocked ISRU yet), take home science, and transfer crew. I guess my whole reason for creating this post was to ask what other people use their space stations for and create a place for people to share any space station tips they have that could be of help to both newbie Kerbonauts, and veterans alike.
...psst... I love pictures, so by all means... post away.
Cheers!