The majority of the time, if you bought a name-brand computer, it has software that will create the recovery media for you. It's usually in the Windows Start Menu, under the manufacturer's name or in a "Utilities" folder. Phrases to look for: Create Boot Media, Create Recovery Disks, Create Emergency Media, Create Recover Media...things like that. Or there is a program simply called, "Recovery Manager." It's probably been sitting there waiting for you.
Keep in mind, you can only create the media once, so make sure you use quality discs / DVDs, I prefer the Verbatim & Sony brands. Also, for computers from around 2010 to current, there is often an option to create a Thumb Drive, which is quite handy as you only need one. I'd recommend using a 16GB Thumb Drive and store it in a marked bag and kept somewhere safe. Only the recovery media can be installed on it and as I said before, you have one shot to create it.