Hi! I have the older version of that tablet, the one with the buttons on the corners hehe.
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I would say the biggest con is the fill tool and magic wand tool sucks. Other than that, it's great! You can also download other brushes and make your own, so I can't really say what is good for what exactly. The air brush and the default tapered one are some I use frequently that come with the program.
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Some things to know: There is a stabilizer tool, you can animate in krita, and you can completely customize your layout. I would highly reccomend setting some keybinds for making new layers/frames for animations and also picking out some filters you like in the dropdown tabs. They really help with adding an extra element in your art! You can make the filters layer specific, group specific, or even brush specific.
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And learning the lock layer, mask layer, and clipping group buttons will help a lot too!
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Sorry if that is a bit much, I'm not a Krita expert but I have been using it for 3-4 years ^^