There are a lot of variables effecting the number of shots you'll get with a fully charged battery.

But there is basic info right in the T6 (1300D) camera manual. In the specifications (toward the back of the manual) Canon states that at room temperature, using the viewfinder (not Live View) and using flash with 50% of your shots (CIPA testing standard) you can expect about 500 shots per LP-E10 battery, per charge. Out shooting in the wintertime at lower temperatures, you get less shots per charge... about 400 at freezing temps, all else being the same as above.

But there are several things you can do to get more shots per charge...

1. Set your camera to go into sleep mode after the shortest possible time (probably 1 minute). This usually isn't any problem, since today's cameras wake up so fast (older DSLRs were sometimes slow to awaken).

2. Set your camera so that it doesn't automatically display the image on the rear LCD after every shot. The less you can use the rear LCD, the more power will be conserved. That rear LCD monitor draws a lot of power every time it's activated. On T6 or any other Rebel series camera, you probably have no choice but to use the rear LCD to make some settings(other more advanced Canon models have a second, smaller, less power hungry, monochrome LCD showing camera settings). Just use the LCD promptly and get back into "shooting mode" as soon as possible, rather than leaving the camera sitting in a menu access mode with the rear LCD monitor on any longer than necessary. There's also display of many of the camera's settings shown in the viewfinder with LEDs, which can be referenced rather than the rear LCD screen.

3. I don't think your camera has built-in wireless connectivity of GPS, but FYI both of those features draw a lot of power from the batteries and should be turned off or used sparingly when wanting the most possible shots per charge.

4. The camera's built-in flash is a real power hog that draws upon the camera's rechargeable battery. It's also pretty wimpy & under-powered, slow to recycle and located in the worst possible place for redeye issues and ugly shadow effects. If you plan to use flash with some regularity, do yourself a favor and buy a good accessory flash. Those all have their own power supply, so don't draw down the camera's battery. Accessory flashes also are considerably more powerful, most recycle much faster and can be used in various ways that minimize chance of redeye and problems with shadows. If you prefer not to have to continually buy disposable batteries for an accessory flash, there are rechargeables available for them, too (most use AA size batteries).

Using all the above "tricks", I pretty easily get double the number of shots per battery/per charge that Canon predicts I should with my cameras. I bet you would, too.

If shooting out in really cold weather, keep a spare battery warm in an inside pocket. Then when the one in the camera seems to be exhausted, switch them out. Once it's warmed back up, the first battery will usually be good for some additional shots.

Besides the user manual (which you might need to download in PDF form from Canon's website... I don't think they provide full, printed manuals any more), I recommend you consider buying one of the guide books specific to your camera. https://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dstripbooks&field-keywords=canon+T6&rh=n%3A283155%2Ck%3Acanon+T6 Those can be quite helpful, saving time and answering your questions! I'm familiar with David Busch's guides for other Canon camera models and found them useful. Some of the others listed as available might be quite good, too (check the reviews). A more general book about DSLRs of all types is Bryan Peterson's "Understanding Exposure".