SuttaCentral is the best place on the internet to find translations of Buddhist Suttas. But the navigation on their website is, er, difficult - unless you are a sutta scholar. Below I have created two methods to make finding suttas easier if you are interested in English translations of the Pali Suttas:
click a quick jump link to take you to the relevant part of SuttaCentral.
You can just press the Go button for DN, MN, Ud, Iti and Sn with the text field empty to get the entire collection. This also works for SN and AN but the resulting file is so huge, it is not recommended.
For SN you can put only the Saṃyutta number to get an entire Saṃyutta - e.g. enter 12 and click Go for the Nidāna Saṃyutta.
I find, in general, the translations by Bhikkhu Bodhi, Bhikkhu Sujato, and John D. Ireland to be the most helpful.