There is a free book available for novice and 'expert' alike and contains invaluable advice for those seeking information from overseas,especially the Imperial old world countries. Its a long book and a heck of a download (250+ .pdf pages !) However it has proved an invaluable aid in my searches to date covering as it does,India (before partition and the birth of Pakistan),modern Pakistan,Ceylon(Sri Lanka) and South Africa,Australia and Canada. The 'low countries' of Europe and the UK are also covered.
A very useful tool for anyone wanting to take the subject seriously.
Its here : (Please acknowledge the authors' efforts)http://www.ceylondatabase.net/Genealogy.html