No, both have a general meaning.

ile : with

I think they are both very polite. To increase the meaning you can add çok in front.

qdemir's explanations are good.

Hi bod,
we don't need to use the possessive adjectives (benim, senin, etc) if the stress is not on the possessive adjective itself.
Example:
Oyuncak ejderham kayboldu.
My toy dragon has got lost.

Here I'm not pointing to the fact that it was my toy dragon but I'm pointing to the fact that it got lost. On the other hand the following sentence is different:

"Fafna benim oyuncak ejderham."
"Fafna is my toy dragon."
Here I'm telling that it is mine. When you add the possessive subjective it will make it clear that it is mine or yours or its etc. and this sentence obviously is pointing to the fact that it is mine. In other words the toy dragon being mine is not just incidentially mentioned here but is the essence of the sentence.
Even when with a different translation the stress can more from mine to toy dragon still being mine is strong enough to be stated.

O Türkçe öğrenmede bana yardım ediyor
öğren+me+de: verb stem + verbal noun suffix + Locative case

öğrenmek: infinitive
öğren: verb stem
me (ma) : verbal noun suffix
de (da): locative case for nouns
öğrenmede: by learning

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The book is supposed to be a lesson material for teachers and therefore consisting of interesting and informative articles which are well organised in different topics.

Küçük is much more common in fact right now I cant thing of an example where ufak can't be replaced with küçük.

Teşekkür ediyorum is uncommon.