The Italian verb vedere means 'to see' in English.
Meaning: to see
Vedo un cane nel parco.
I see a dog in the park.
Meaning: to watch
Mi piace vedere film d'azione.
I like to watch action movies.
Meaning: to look at
Voglio vedere il tuo nuovo vestito.
I want to look at your new dress.
Meaning: to visit
Devo vedere mia nonna questo fine settimana.
I have to visit my grandmother this weekend.
Meaning: to understand
Non vedo come possa funzionare.
I don't understand how it can work.
A1: Io vedo il cane.
I see the dog.
A1: Tu vedi la televisione.
You see the television.
A2: Loro vedono i fiori nel giardino.
They see the flowers in the garden.
B1: Ieri ho visto un film al cinema.
Yesterday I saw a movie at the cinema. (passato prossimo)
B1: Domani vedrò mia nonna.
Tomorrow I will see my grandmother. (futuro semplice)
B2: Quando arriverai, avrai già visto tutto.
When you arrive, you will have already seen everything. (futuro anteriore)
C1: Se avessi visto quella scena, avresti capito di cosa parlo.
If you had seen that scene, you would have understood what I'm talking about. (trapassato prossimo)
C1: Nonostante abbia visto il film molte volte, ogni volta mi emoziono.
Although I've seen the movie many times, I get emotional every time. (presente perfetto)
C2: Avrei voluto che tu vedessi la bellezza del paesaggio come l'ho vista io.
I wish you could have seen the beauty of the landscape as I saw it. (congiuntivo passato)
Vedere is a very common verb in Italian and it's used in many different contexts. Its basic meaning is related to the act of perceiving something through sight, but it can also be used figuratively to express the idea of understanding or realizing something. For example, you could say 'vedo che hai capito' (I see that you understood) or 'non vedo l'ora di partire' (I can't wait to leave).
One important thing to note about vedere is that it's an irregular verb, which means that its conjugation doesn't follow the regular patterns of Italian verbs. However, once you learn its conjugation, you'll be able to use it in all its forms without any problems. The present tense conjugation of vedere is: io vedo, tu vedi, lui/lei/Lei vede, noi vediamo, voi vedete, loro vedono.
Another interesting aspect of vedere is that it's often used in idiomatic expressions that have nothing to do with seeing or perceiving things. For example, 'vedere nero' (literally 'to see black') means to be pessimistic or have a negative outlook on something, while 'far vedere i sorci verdi' (literally 'to make someone see green mice') means to deceive or trick someone.