Access is much more complex than most people realise.
You need to build tables, link tables together after determining their relationships, design and run queries (you will need to learn SQL), build forms including drop down lists and lookup fields, use expressions, write reports and macros and write some Visual Basic for Applications (very similar to Visual Basic) to make it all hang together, look pretty and protect the database (and the user) from amateur tinkering.
Next is testing and debugging.
Then there are database administration tasks such as backing up and repairing the database, normalising the structure, ensuring data integrity, reorganising the database as it and its usage grows, providing network and internet access, security (sometimes down to user level security) etc.
In my case, I studied relational database theory in 1981, did a Jill Luha course ("Access to Access 2.0") in 1995 and designed and developed database application systems for 9 years. I am now getting to grips with it.
You may have left your run a little late.
If you are a programmer, you will probably be able to pick it up quickly. I learnt programming as I went along.
Here are a couple of links you could try:
http://databases.about.com/od/tutorials/Tutorials.htm
http://cisnet.baruch.cuny.edu/holowczak/classes/2200/access/accessall.html
You will be able only to scratch the very surface in the time available and the best course of action is to "come clean". You will not be able to bullshit your way through.