+1The main thing is to enjoy the experience.
Str8s, shavettes, devettes, SEs, DEs and Injectors are all there for your pleasure.
By becoming competent with str8s you will grasp the mechanics of good technique as well as some underlying theory as to what "sharpness" and "smoothness" really are.
After that your experience with every razor you use will be better and deeper
And then there's all the history and collecting to get into...