Best choice for my use case?

G'day, how's it going?

I've just started looking into machine learning stuff, and stumbled upon this, looks awesome!

I just want to know what kind of methods I should use for the following:

• Text identification (Spam checker for example)
• Image analysis (Detects whether the image given after training is a male or female)

Kind regards,

Machine-Learning newbie, Mitch!