Reddit mentions of SteelSeries QcK Gaming Mouse Pad - Black (Renewed)

D.Va and Wrecking Ball are good picks to start out with. You already understand their kits and how to play them, so you'll only have to focus on adjusting to mouse and keyboard. And they aren't the most aim-intensive heroes, so that's nice.

Do you have a good mouse? If you're still using some crappy wireless mouse, please do yourself a favor and get a wired gaming mouse such as the Logitech G203 Prodigy. It's not expensive, will be more accurate, and will give you a lot more options to adjust sensitivity in its software. Also, get a mousepad at least this big. It's worth it.

Once you have a good mouse, you need to turn off acceleration and change your mouse settings to ensure you'll have the most consistent performance. Go to control center>mouse>pointer options. Copy what mine look like in this image. Make sure "enhance pointer precision" is unchecked and your speed ticks are at the right position. You might think this feels weird to navigate with, but you'll get used to it. Your mouse is now reading your movement based on the distance you move your hand instead of speeding up/slowing down your pointer relative to how fast you move your hand. This makes for more accurate tracking in the long run. And before you nerds start attacking me, YES, I am aware that this step is not necessary for Overwatch, because Overwatch already uses raw mouse input. But trust me, turning off acceleration for your entire computer will help you develop proper muscle memory even outside OW. It's worth it if you plan on PC gaming at all. Most games don't use raw input by default.

Now go into your gaming mouse software and adjust the DPI until you feel more in-control of your movements. I recommend 1000 DPI for navigating around your desktop. This will likely feel sluggish if you're new to PC. You can go higher if you want, but keep in mind that most skilled players use a base DPI lower than 1000, especially for the more aim-intensive heroes (but you can adjust OW separately, as you'll see in a second). The slower it feels, the more space you have to work with when aiming, which results in more precise movements. If your DPI is too high, your crosshair will be flailing around like crazy because even the smallest movement will throw off your aim.

Now go into the settings in Overwatch and adjust your mouse sensitivity there. This is entirely separate from your gaming mouse software, so think of this as a compounding effect on how sensitive your mouse is. You can look up all kinds of combinations online. Usually they'll tell you the number in Overwatch and the DPI for the actual mouse. So 4 in-game, 800 dpi for example. Or they may use eDPI, or "effective DPI" (3,200 in this case). This gives a number that combines both values through multiplication. Here's a simple calculator for that. Also take a look at this page for more info on this stuff. At this point you should be all set as far as your mouse goes. Feel free to mess around with it. Tanks usually use a higher eDPI because they aren't sniping or snapping onto targets as much. Just go with what feels right. You can always change things later.

As far as keyboard setups, you can keep it essentially the same as default if you want. Remember to bind a key to "interact." I use 'F.' A lot of people change around their ult button or ability buttons for different heroes. Changing ult from 'Q' to 'shift' or 'ctrl' for example will allow you to simultaneously ult while moving left (because it frees up your ring finger), which is helpful for Tracer pulse bomb sticks. I personally bind melee to my side mouse buttons so I can do it anytime, and I have crouch set for 'V' so I can spam crouch with my thumb while moving left and right. This is a helpful tactic to dodge enemy shots and is much better than jumping. Put your emote, spray, and voice line buttons in spots where you will not hit them accidentally. The last thing you want is to emote mid-fight when you meant to press 'E.' Remember you can use certain keys to bring up different menus mid-game, such as 'P' to see your team and change voice channels. You can also bind keys to save highlights of your play manually mid-battle, or to save the POTG while it's being shown at the end of the match. If you plan on using the replay system (extremely helpful, I think), remember to bind those controls too.

Let me know if you have any other questions!