No, because it is never good to start a sentence with the word "but".
Sure, I can use "so" at the beginning of a sentence.
no
no
Beginning with a short tour, visitors can learn and experience all that the Science Center has to offer.
The back flip you just did was all right, but it wasn't perfect.
Deliberately.
yes
Maybe the right grammar there is 'at the beginning of summer'. Unless you are using a sentence with the phrase 'at the beginning of the summer vacation', that's when you're supposed to use 'the' before the word 'summer'.
You can do whatever you want Ellipsis is a noun so you can use it at the beginning of a sentence. A ellipsis is often indicated by a set of dots.
In the beginning, God created the Heavens and the Earth.
It's actually notwithstanding, (and not notwothstanding). Anyway, yes, you can use it at the beginning of a sentence.
No you can not because you are making a list and so what the topic is who use what happened the most and trun it into a sentence.