Newbie to rolex need help

[Clubmomo]

Hi all senior,
I would like purchase a rolex for myself...
But I'm kinda confused with all the number and model...
Personally I like rolex sub more.....
I don't know how to tell the year of the watch by looking at the numbers....
Is it possible to get a Sub ( black or green) with the budget of 6k+??? Not looking for watch more than 2 years...... Is that possible?
Maybe all can offer me with suggestion on which model will be a good buy with my tight budget that fit my expectation....

Thank you so much...

[Oceanklassik]

I think your budget is quite alright. Try ploughing the sales section to get a sense of the pricing. The ROLEX Submariner is definitely a good choice.

[Clubmomo]

What model sub is less than 2 years old??
I'm so confused with all the model number... As well the series... Haha

[Oceanklassik]

Less than two years probably 'V' series and later, the alphanumeric & 'G' series. You can google for the information. Try 'oysterworld'.