number+行目
I have learned that ...for example, 3行目 means "the third line"
we say: 3ぎょめ

I could not find this in a vocabulary.
Have we other forms like this, not easy to find on vocaboularies?

For example I've seen also 1日目 : how to pronounce this and what does this mean? "the first day", maybe?

thank you!Just now I thought also about some Japanese addresses I have: I can find in those addresses something like "chome", which I guess is 丁目 ... that final "me" 目, again ^_^

Question

number+行目
I have learned that ...for example, 3行目 means  "the third line"
we say: 3ぎょめ

I could not find this in a vocabulary.
Have we other forms like this, not easy to find on vocaboularies?

For example I've seen also 1日目 : how to pronounce this and what does this mean? "the first day", maybe?

thank you!Just now I thought also about some Japanese addresses I have: I can find in those addresses something like "chome", which I guess is 丁目 ... that final "me" 目, again ^_^

Answer

It's called 数助詞. Take a look at this.
https://en.wikipedia.org/wiki/Japanese_counter_word

3行目→さんぎょうめ
1日目→いちにちめ

目 is a suffix to be used when you say the order of things. 
ex, 3行 is three lines, 3行目 is the third line.

Answer

Sì! Yes! There are several ways to say "you are welcome" such as "Prego" (the most well knon and "classic"!^^), and "di niente" ^_* 
I am sure I will read again from you ^^ 日本語を勉強していますから。
よろしくお願いします。
Have a nice day!

Answer

どういたしまして。Can I say "prego" as "you are welcome"?

Answer

this was pretty interesting! *_* it's so clear, now! Thank you really much, Ryoko-san^_^

Answer

Ciao, for the additional details, 丁目 is "choume (ちょうめ)". As Hana-san said, this 目 is used for the order of the things. You can use it, for example, "my second notebook entry" = わたしのさんばんめのノートエントリー、"my forth question" = わたしのよんばんめのしつもん. I hope now you are clear about this 目.