Memory cards are exactly what they sound like! They store your data and probably most importantly your vlogging or videos that you have recorded. SD and micro SD cards are pretty much the standard at the current time and probably will be around for several more years. I remember the first Sony 3-megapixel camera I purchased had what was just referred to as a memory stick about 2x the size of a standard SD card. Every camera I have owned since have all used SD cards or a micro SD card for an action camera.
I personally really only use one brand and that is Sandisk. I have had a perfect track record with Sandisk, never one problem, ever! The cards typically can be bought for a good deal when you find them on sale and will without any problems record and store all your vlogging episodes. I have a small bag full of SD memory cards at this point and after buying enough of them and vlogging with a camera that is almost 25-megapixels at 1080p – 30 frames per second, I recommend buying the 64 GB Class 10 Sandisk cards. I recommend this because you can frequently get them for a competitive price and will never have to worry about the card not performing the way it should.
The 64GB will take several hours of footage for most people depending on your camera’s megapixel count and frame rate recorded. I find that I get about 5 hours or so out of a 64GB card and that is fine with me. I wouldn’t want much more footage to be on one single card as a preventative measure of insurance in case I was to accidentally lose or break the card. Typically the stuff I vlog about would be very difficult to replicate exact conditions or timing if I was to have to re-shoot a video. So I wouldn’t want to have something like a 256GB card and have probably over 20 hours of vlogging footage captured and then potentially lose all of the footage if something happened. The first time you misplace a card with all your footage on it, the thought of redoing all of it will be very daunting.
Like I said, I prefer the Sandisk brand and that is not because they pay me or give me free cards or anything like that. I just typically find that they are usually available anywhere in the world if you are traveling and they usually are a fair price for what you are receiving. Of course, I am pretty cheap so I try to always get the best price I can for anything I buy and Sandisk cards are no exception. I find that the ones on Amazon are almost always the best price you will normally find on the cards so I would not hesitate to order though them.
I have bought a few other brands and have had equally just as good of luck with the PNY and Lexar brands as well. I typically like all my gear to match and be the same or close to the same just for my own organization purposes but I would absolutely recommend the two brands above. You might even be able to get them slightly cheaper as Sandisk is sometimes a couple of bucks more. Just make sure any card you do buy for vlogging has at least a minimum recording speed of 45 MB a second or more. I don’t even chance it I typically only purchase a professional grade card that can record 80MB a second or more but I am also using a pretty high-end camera.