No problem. As an avid detailer (did it during my later highschool and early college years as a side gig), it irks me to see how some try to take care of their cars but end up doing more harm than good. In reality, most of the minor damages to the finish of a car is own by the owner. Could be improper washing, waxing, or combination of both. I see cars as a large investment, much like a house. One would try to use the best to finish and clean their house to prolong its condition and value, right? Same for cars.
Turtle Wax hasn't made anything worthy of purchase for a few decades. Reason it is so popular to this day is simply because its name sells. Much of its formula is at least a few decades old, dating back to the 50's and 60's. For example, its popular "Hard Shell" line of products. There are simply better products one could buy off the counter at any parts store, Walmart, Target, etc. Meguiar's and Mother's have a good line for typical consumers.
I would skip the wet sanding, without a doubt. Yes, there are orange peels (micro unevenness in the paint), but that is not a concern with a well taken care of finish. Remember, there is only a certain amount of paint/clearcoat to work with. Literally around ~100-150 microns of material. Wetsanding will significantly diminish allowable work material.
Any basic finish maintenance should consist of a good wash detergent. Meguiar's Gold Class wash can be bought at almost every store, along with Meguiar's Deep Crystal wash. I much prefer Gold Class because it keeps suds longer and much better lubrication. Grab a good washmitt. Could be a dedicated sheep skin wool mitt, microfiber mitt, or even a soft grout sponge from Home Depot. Do not bother with chenille, towel, other sponges, and especially BRUSHES. Also use the two bucket formula. One for clean soapy water, and the other with just plain water to rinse the mitt after wiping down each panel. Dry only using a clean microfiber mitt. A lot of the damage to the finish is done in the drying process. The idea is to keep abrasion of the paint to a minimal. Even with modern clearcoats, the finish is EXTREMELY delicate. Improper techniques will quickly lead to marring of the paint, swirls (micro scratches) and possibly scratch, which is ultimately a flawed finish of the paint. That will require polishing to even out the flaws, which we are trying to avoid. This refers back to the allowable material to work with, and with any abrasion (including abrasives such as polishes), it removes the material.
Next is a surface prep for protection of the paint. Claybars. A claybar is lightly rubbed on the surface of the paint, removing contamination. Could be sap, iron fall out, pollen, etc. These contaminates embed itself into the paint and usually cannot be removed by just washing. Think of it as exfoliating your skin. Then there is protect of the fresh clean and exfoliated paint. There are natural waxes and there are SEALANTS, which in other words are "synthetic waxes". Both usually provide different levels of protection and shine appearance. Natural waxes usually doesn't last as long, but leaves the paint looking very wet with significantly more depth. Sealants have a much brighter and clearer shine, and lasts much longer due to the ingredients used- polymers and acrylics. Many layer sealant first, then top it with a wax for a combination of durability and depth. There are SO many products out there, the combinations are endless.
If you INSIST on getting polishes, which are abrasive and correct flaws in the paint for better appearance. I suggest a dual action polisher instead of a rotary. A rotary has VERY HEAVY cutting power and is often unnecessary.
This is the basics of taking care of a car's finish. I have left out a lot of things as it would take a few hours to type it all out. There are cleaners for wheels, different brushes for different applications, protectant for plastics, cleaners/conditioners for interiors, towels, etc etc. All this you can explore yourself by going to detailing forums.
www.autopia.org is a great place to start and it is actually where many detailers have started.
BTW, my new favorite off the counter sealant is Meguiar's Ultimate Wax Liquid. Yes, it says wax purely because of marketing for the general consumer. Reason it is my new favorite sealant is because it has very good durability and more importantly, it doesn't stain trim. It also has decent amounts of fillers which fills in the swirls and hides them. Not a permanent fix, but works well for those who want a great finish on their daily driver dark colored cars.