Schaum's Outlines Vector Analysis by Murray R. Spiegel
Publisher: McGraw-Hill | 1968 | ISBN: 007060228X | 225 pages | PDF (scan) + DJVU | (15,8 + 2,8) MB
This is great as a preparatory or supporting text. I worked through virtually all of the 'supplementary' problems and found the chapters on curvilinear coordinates and tensor analysis very useful preparation for the study of General Relativity texts.