I was wondering is someone could clear up when to use the right possessive pronoun. From my understanding teu/o meu is masculine and tau/a minha is feminine. Now my question is ... when do you use suas/seus? Are those the plural versions?
Oh ok! Thank you so much. :)
Also, just to confirm: Teu is the masculine "your/yours" and meu is the masculine "my/mine". Correct?
Yes, teu is masculine singular, and tua is feminine singular: the plural forms are teus and tuas
For my/mine, it's meu/minha/meus/minhas
Watch out though, because seu/sua/seus/suas can also mean your/yours, especially in Brazil.
The browser version of Duolingo provides a lot of useful information in the form of tips and notes which can be accessed by clicking on a skill icon and then clicking on the lightbulb (if present). The Possessives Tips and Notes should help to answer your questions and more.
If you have any lingering doubts try the guide provided by Easy Portuguese.