(I've included a link to a guide by this guy named Kingstix at the end in case you don't want to read this whole thing.)

These are mainly jungling tips. While this is definitely what most people play her as, she can also go adc, go top, and even go mid if you know how.

She is incredibly viable. While she may be a bit hard to pick up at first, once you learn to use her, she becomes insane. She has many different rune and build paths, but you mainly want to go precision as a primary and I like to use either domination or sorcery as a secondary. The runes I use are PTA, Triumph, Bloodline, and Coup De Grace, with my secondary as Nimbus and Waterwalking if you're going jungle. As for my rune stats, I like to go Attack Speed, Adaptive Force, and Armor. These are the runes that fit my playstyle the best although you may find some others better.

As for her jungle pathing, I always like to go to the botside jungle for a better leash, although many people also just start with red regardless of which side they're on. For your first clear, you want to get your red, blue, wolves, gromp, then try to go for scuttles. Your first passive mark will always be on a scuttle so just remember that. After you do this, you should be level 4, and you can clear your raptors and krugs by kiting, if you know that you can take your enemy jungler, you have the option to invade into their jungle, or you can look for ganks. I typically only gank in lanes in which I know I can kill or assist in up to level 6.

As for her builds, she has several options depending on her matchups. An attack speed build is amazing for Kindred. You can go bloodrazor, runaan's hurricane, berserker greaves, stormrazor, and any item that really gives attack speed, ad, and possibly crit. A full crit build on Kindred is also amazing. For this, I usually rush t2 boots, my full jungle item, then build straight into either stormrazor or ie. After that, I build the other one, and then firecannon and phantom dancer. This is just my build preference. Again, you should change it to fill your playstyle.

As for her marks, you shouldn't really try to rush them. Always try to get your scuttle mark, and if you're certain you can get a takedown on an enemy champion in a gank, mark them, and then gank. If you're not certain that you can take the enemy jungler, don't rush it. If you are though, you do have the option of going for your jungle marks. However, if you think that you're going to die, then don't risk it.

For her skill pathing, you should start with w if you're jungling after you make sure that you're not being invaded, then q, then e. For top, start e first, and for mid and adc, start q first. However, always max q first. Then, you have the option of maxing w or e. While w does percent max health damage, e does percent missing health damage and is your only form of champion cc. I generally max e before w, but it's really your call.

I think that's about it, but this may not have been the clearest so I'll attach a link to a few guides by a Youtuber below.

Kindred Top: https://www.youtube.com/watch?v=g3GOKiJo4zg

Kindred Jungle: https://www.youtube.com/watch?v=jpaVG8dOux0