Just because you are at IUS doesn't mean you are limited to the resources we have here in our library. You can search in IUCAT to see what other IU libraries own. If you find an item you want, and we don't have it here it IUS, but it's checked in at another IU library, you can request that it be sent here for you to check out. Look for the "request delivery" link in the record.
It can take 4-7 working days for an item to be sent here from another IU library, so don't wait until the last minute to begin your research. You want to allow for time just in case you want to take advantage of this service.
IUCAT is the library catalog. It is the tool that tells you what the library owns and where it is located. You can use IUCAT to find books, journals, electronic books, and other resources. Biology call numbers generally run from QE through QR.
Think about your topic, and try to come up with a list of terms and concepts associated with that topic. You can search IUCAT using those words by typing them into "keyword anywhere." Use the word and to combine your terms.