Hello. There should be lots of threads floating around here that are related to rollers but to answer your question....

Rollers are a wonderful thing but everybody needs several rides to get the hang of it. If you're new to riding in general then plan a couple weeks to get used to the feeling and your balance. They're great because you work on balance, you work on riding technique, you work on pedaling technique, and you work on smoothness. I'm not going to lie, they're pretty tricky at first but once you get the hang of it, you're fine. Just no sudden movements. They're no louder than an indoor trainer. But rollers are really great if you are looking for something different and/or you're someone who does a lot of indoor riding during bad/cold weather months. Almost anybody would recommend getting a set.

If you have a trainer or have ever ridden a trainer, you don't necessarily notice how it affects your riding until you move onto them full time during the winter. But one ride outside (or on rollers) make you use your first 10 minutes to get used to regular riding vs. "trainer riding" again. I hate riding a trainer unless I need to do specific workouts or intervals otherwise I'm on my rollers.

When you first get them, it's generally best to set it up in a doorway so that you have something to either bang into or hold onto on each side. If, god forbid, you do swerve off of them, your wheels slowly stop spinning and 99% of the time you do a slow motion fall over. Most of the time it's accompanied by hysterical laughter from yourself or anybody else in the room. In fact just yesterday I went over but caught the wall and was able to clip out before I even started falling. (I got caught up in telling a story to my teammates about winning a road race and went right off the side. lol)

I say go for it! It WILL help.