Chronological or other sequence for beginners At least one of the "introductions to Buddhism" that I read included elements from, some biography of, the life of the Buddha, including:


Early life
Searching for enlightenment
Sermon at Benares (a.k.a. "Setting the Wheel of Dhamma in Motion")
Death (i.e. "Behold etc. ... Work out your end with diligence").


Is the Tipitaka arranged in useful sequence? I feel like I'm walking into a library, looking at the Dewey Decimal Classification and wondering which I should read first.

I take it that the Tipitaka is not chronological!

Am I right in think that the Dhammacakkappavattana is the first and most important sutta?

If so is it sensible that, there, it is "SN 56.11" (i.e. not the first sutta)?

What other "important" suttas should I read "first"?

Is more known about the sequence in which the Buddha himself delivered them (e.g. if the Sermon at Benares was the first, was the Fire Sermon the second, and which then was the third, etc.)?

Please answer any or all questions above.

Or you could answer this question by commenting on what it says at Which suttas should I read? Do you agree with what it says there, do you have anything to add to what it says there, or to take away?
Am I right in thinking that the Dhammacakkappavattana is the first and most important sutta?

I wouldn't say most important but, taking into account other discourses, it seems it was the first discourse expounded by the Buddha.

If so, is it sensible that, there, it is "SN 56.11" (i.e. not the first sutta)?

It depends on how you'd want to organize the discourses. Since SN is organized thematically, this is one of the reasons for it being in the last section (SN 56).

What other "important" suttas should I read "first"?

I struggle with this question since there is a plethora of "important" or "good" discourses. Personally, I enjoy so many discourses in the canon that I've lost count. Nevertheless, here are some which I consider important (The subsequent bolded filtering are those discourses which I consider to be the core. I'd recommend reading all of them nonetheless):  


Dīgha Nikāya: 1, 2, 9, 15, 16, 29  
Majjhima Nikāya: 1, 2, 8, 9, 10, 11, 14, 18, 19, 20, 21, 22, 26, 28, 29, 35, 36, 38, 43, 44, 47, 55, 58, 60, 61, 63, 66, 70, 72, 74, 82, 86, 88, 95, 96, 107, 108, 109, 117, 118, 121, 125, 136, 139, 141, 149, 150
Saṃyutta Nikāya: 12.2, 12.15, 12.17, 12.33, 12.34, 22.2, 22.59, 22.81, 22.85, 35.28, 35.116, 36.6, 36.7, 36.8, 36.11, 38.14, 41.6, 45.8, 46.51, 46.55, 47.10, 47.19, 48.42, 51.15, 55.7, 56.11  
Aṅguttara Nikāya: I'd recommend looking at Bhikkhu Bodhi's Thematic Guide and reading the discourses by whatever topic interests you. A discourse that usually stands out in this nikāya is AN 3.65. (I also like 3.61, 3.68 &amp; 3.69)
Khuddaka Nikāya: I recommend reading fully the Dhammapada, Udāna, Itivuttaka, Sutta Nipāta, Theragāthā &amp; Therīgāthā. They are small and easy to read. If I had to choose one, I'd say the Sutta Nipāta.


Is more known about the sequence in which the Buddha himself delivered them (e.g. if the Sermon at Benares was the first, was the Fire Sermon the second, and which then was the third, etc.)?

These are the orders I've seen:
&nbsp;
1. Dhammacakkappavattana Sutta
2. Anattalakkhaṇa Sutta
3. Ādittapariyāya Sutta [Source]
&nbsp;
1. Dhammacakkappavattana Sutta
2. Hemavata Sutta
3. Anattalakkhaṇa Sutta [Source]  

Can't recollect anything else regarding this topic.