Finding information about specific tests is usually not difficult. There are a variety of 'finding aids' that list and review hundreds of different tests and measurement tools. Some of these finding aids are available electronically, others are in print format. No one source is totally comprehensive, thus you may need to check several.
If you don't know of a specific test to use for your research, these tools will also help you identify what tests would be appropriate for your need. Consult several for a wide variety of choices.
All of these tests are developed, scored and administered by professional organizations. Starting at their website will give you information on the test and study resources.