There are some very interesting resources in English on the Estonia Genealogical Society Web site
Readers can see examples (and click to zoom in) of what the records - German, Russian and Estonian - look like.
Other sections include maps of Estonia from the end of the 19th century and 1939; examples of Gothic handwriting in German records, a list of the Parnu branch members and their families (many Jewish names) being researched.
There are many useful links in English and a list of genealogical resources in countries worldwide.
There are also contact details for Estonian family registry offices, holding records from 1926-1940/49, and the Central Family Registry Office which holds documents from the 1830s-1926.