Exactly what does the clutch do?

I have a 1993 Mazda B2300 Pickup with 2.3lt engine.  I am starting to have what I believe are clutch problems.  I dont have a lot of experience can you help me understand the function of the clutch in my Mazda?The clutch connects and disconnects the engine and transmission. Disengaging the clutch release device (peddle) actuates the clutch fork. The fork contacts the release bearing, moving up against the clutch diaphragm spring fingers. This step enables the clutch pressure plate to raise from the flywheel, opening a very small room between your disc, flywheel and pressure plate.For a detailed explanation of particular clutch components view the figure on the right 1) Transmission input shaft 2) Transmission input bearing 3) Clutch release bearing occasionally referred to as throughout bearing 4) Pilot bearing in the back of flywheel 5) clutch disc lining and 6) clutch fork, 7) Flywheel. When the disc moves from the flywheel, power flow from the engine to your transmission is interrupted. The engine crankshaft and flywheel are turning at a higher speed than the disc and transmission input shaft that are coasting. Once the clutch is actually employed, the disc slides lightly to provide smooth engagement and once again, the clutch clamps the disc up against the flywheel. This leads to the input shaft to turn transmitting engine power to the transmission.The most important factor in clutch design is the disc material; our Luk clutches use exclusively formulated lining with better performance and extended life guaranteed.As demonstrated in this figure there are a number of components that will wear or perhaps end up being broken.  You can see the original equipment clutch kit replacements on our site.