For me to start cross stitching I had learned that from my mom. But if you go to youtube.com they will show you everything from A to Z about how to start and finish your cross stitching. If you go on your left side on the top where there is the word search and write the pattern name you will get it.
There is 2 kinds of cross stitching 1) Pattern which you will buy all the necessaries to finish what you are going to do as a pattern as Fabric, floss, 2) the kit everything come in a package.