The suttas are probably not introductory beginner material (even though some were evidently composed to that end).
If you are considering to read the suttas cover to cover, I'd suggest starting with the Majjhima Nikaya, the middle length discourses, as it's the most satisfying to read in terms of length of the individual discourses, and the variety and depth of the content.
Digha (long), Anguttara and Samyutta Nikayas can be a bit of a drag to read, either because of the propaganda angle (some Digha discourses), or the elaborate permutations and slight variations (Samyutta and Anguttara). There's good stuff in all of the collections, of course: Majjhima has great meditation suttas, such as "one after another" and anapanasati and satipatthana suttas; Digha has the parinibbana (account of the Buddha's last days) and maha-satipatthana suttas; Samyutta has the "setting in motion the wheel of the Dhamma" and the discourse on the not-self characteristic, among other gems; and Anguttara has the Kalama Sutta, for example.
It's an acquired taste. The suttas were not written to current literary tastes. If you can read the genealogies in the Bible, or the catalogue of ships in the Iliad, then the suttas will be no problem

Cheers,
Florian