FamilySearch is more than a database you can use to search for emigrants and ancestors. The FamilySearch Wiki allows people - like you and me - to share research tips and information about sources, not just at FamilySearch, but anywhere. As these pages are updated by users, pages for some subjects and localities may be more complete than others. There are pages for individual counties, for example Ayrshire and Inverness-shire. They have few pages devoted to topics in Scottish history like, Scottish Emigration and Immigration or research skills, like Scotland Handwriting. Most FamilySearch Wiki pages are devoted to records, for example Scotland Census, Scotland Church Records and Scotland Statutory Registers - Vital Records.
To find more leads to books and documents that can help you find your target emigrant or ancestor, use the search box at the upper right hand corner of the page. If you have information to add to a page, be brave and do it. In order to edit a page, you must first be a registered user of FamilySearch and to use the rich editor box, you must have the most recent version of Firefox.