When I started exploring ideas beyond the realm of the WT, evolution was one of the first. What struck me--and I suspect you, too, inbetween--is how grossly misinformed I'd been from basing my beliefs on what the WT wrote, such as little gems like the Creation book.
As another poster has noted, it is absolutely necessary for you to start reading about the science of evolution. Coyne's book is absolutely fantastic. Another good one is Carl Zimmer's Evolution: the Triumph of an Idea, which is ideal for the lay person with little or no background in biology and might be easier for you, given that English is not your first language. Another good one is Prothero's Evolution: What the Fossils Say and Why it Matters
Since you're interested in the idea of "missing links" (and be aware that the science community does not use that term since it is highly misleading; it's more favored by creationists and the popular media), you might read Carl Zimmer's At the Water's Edge, which is a detailed account of the evolution of whales. The number of so-called "missing links" or transitional species discovered in the cetacean family tree is startling and revealing about the general nature of how evolution works to produce morphological change.
Happy learning!!!