Good morning, Suzie Place;
Nice to see you on this forum also.
If you look at the earlier postings on this topic, you will see that the Minolta Hi-Matic 9 is a fairly versatile camera. Mike Elek has described its fully automatic mode (what is now called a "program mode") when you set both of the lens "rings" to "A." When you move the lens rings to settings other than "A," you put the camera into a "shutter priority mode," an "aperture priority mode," or a fully manual mode. There is a line on the lens barrel you align the selected lens aperture and shutter speed with to choose them.
If you leave the aperture or diaphragm ring (the one with 1.7, 2.8, 4, 5.6, et cetera) on "A" and set the shutter speed ring to what you want (fast speed for stopping action?), with a battery in the camera, the camera will choose the lens opening for you; "shutter priority mode." If you leave the shutter ring (the one with B, 1, 2. 4, 8, 15, et cetera) on "A" and set the aperture ring to what you want (depth of field perhaps?), with a battery in the camera, the camera will choose the shutter speed for you ("aperture priority mode". If the camera cannot set the speed or the aperture to something workable for the selected setting you have chosen, the light meter display in the viewfinder will tell you. You might need to interpret this display for the subject and the lighting condition to determine validity.
OK, the last case: With both rings set to a number (not to "A"), you are in full manual mode. You are in charge. If there is a battery in the camera, the light meter needle will tell you if it thinks the exposure is correct when the needle points straight out horizontal toward the block. If you are using an exposure guideline or an external meter, you can choose what you want that matches that lighting exposure value (EV).
The self timer is the little metal tab or lever that sticks out through a slot in the side of the lens. You move it to "V" to arm and wind up the self timer. The normal shutter release button starts everything just like normal.
Yeah, my lens sections seem to be a little loose also. If I do not bump them, or push them out of alignment, everything seems to work.
Well, with these comments and your copy of the Minolta Hi-Matic 9 manual, you may have enough to get started. Put a roll of film into the camera, try out the various modes, and see how you like them.
On the subject of the dark SR-T 101 view finder, Steve has already suggested looking at the mirror lock up dial, although I do not think that the SR-T 101 has a mirror lock up. I think that was on the SR-T 102. If there is a small round dial on the right side of the lens mount below the shutter speed dial and shutter release button, try rotating that dial from a position slanting up away from the camera front to a position slanting down away from the camera body. If you take off the lens and look inside the camera, normally you should see the front surface of the mirror. If you see the cloth focal plane shutter behind the rectangular mirror box, there may be a problem with the mirror being stuck in the up position. If that is the case, then we might need to arrange for a telephone call to discuss the procedure to try.