Which website should I refer to when buying tickets? Is there any discounts on specific sites that I should look for?

I like to purchase IN PERSON!!

Please check the official Disney website. In my opinion this will provide genuine information.

We used Ares Travel. Genuine Disney seller. Saved us a couple bucks. We did have to get tickets at the gate with our voucher.

There really aren't any discounts anywhere that are real.

I purchased the tickets at the gate.

If you download the Disneyland app it will allow you to purchase tickets bypass the ticket windows and go straight to the gate

I think they shut down the extra websites

When buying tickets, you could go to the official Disneyland website. You can also download the official Disneyland app to get tickets. For discounts, you are able to find tickets through various websites that offer cheap tickets, but they are not as reliable as getting tickets from the official Walt Disney Co.

Not that I know sorry I both the tickets in the park :)