(i'm using an older version of anki, but i'm assuming the screen is still the same)
Go to the main window and click browse. At the top of the browse window is a search function. You can search for a card that way. You don't even need full words for it to search it. You could search 'hep cir' and it would pull up cards that have 'hepatitis' and 'cirrhosis' in the card. Hugely helpful when you can't remember how to spell something. You can also click on name of the column to sort cards that way (you can sort it by deck, create date, etc).
Tags are something I would suggest using because it can help you sort cards you want to study later. My method: we went modules. We also had lecture 4 hours a day. So, I called the first lecture on the first day in the cardio module 'cards01a.' Then I called the second lecture on the first day 'cards01b.' Then on the second day of the module, i called the first lecture 'cards02a', etc etc. That way my cards were tagged specifically for the lecture so 1) when i wanted to only study certain lectures, i could, and 2) i knew what lecture i had to reference if i had questions about what was on the card.
I would suggest buying the mobile version of anki as well. I'm a fourth year, and I still reference my anki cards on the wards - sometimes it's easier than googling.