Well to defeat the AI I will teach you a secret... They don't know how to block grabs! Just grab A then grab B, it works so well.
I can tell you that I really love to main Talim! But I love maining her because I know she requires a lot of effort to win with! So if you like an uphill battle choose her. For me it's the cuteness and awesomeness of winning fights that are stacked against me that keeps me coming back for more.
Against other players I like to play Talim as reactionary character. I play the first round and fight a little bit, but not pull out my best moves, while trying to figure out if my enemy is one who attacks without thinking or if they pay attention to me at all.
If they are a stupid attacker online I can get in a lucky 4BK AB, Man that is sick when it connects.
When I ground targets from hits I like to punish them with a 4AB, also when your learning talim you need to experience the air kick, it really kills the beginners who can't air control, 3B K K K K, and when you can't deliver any more kicks mash an AB spinning whirlwind, it's fun stuff.
I could go on and on, just touching on moves that I think a beginner can have fun with. Hell I know I do.