Congratulations and welcome!
You'll love the Yashica Electro GSN - it is a fine camera with a very sharp lens. Take the time to learn all that you can do to creatively control the camera, and you'll be a very happy person.
In time, you may find that you want to move on to cameras that give you more automation - or more creative control - or both. But there are some great deals out there on fine cameras such as the one you have now - much can be done.
I hope you continue to enjoy your new camera and I hope that you find Rangefinderforum.com to be a welcome resource.
PS - I took all these pictures with a Yashica GSN
As you can see, the camera is top-notch!