This site gives an excellent description of all the organelles within the cytoplasm of a cell, and it has links that further describe each organelle. This site has images of many kinds of cells.
Most images are highly magnified.
After this site loads, scroll down to see pictures of blood cells taken through a microscope. Keep scrolling to find excellent drawings of each blood cell type. This site has an assortment of movies, quizzes, and lots of trivia about the body systems, cells and other topics. You can view it on the new Oracles. Fun to watch.