My first conference presentation was at the end of my third year. Before-after that period, I started to read some books. These books helped me here and there with small tips.
I am listing some books for early-career PhD students. These may help you too if you are not that much familiar with academic professional environment. The books are designed to help in searching for academic jobs, but they provide information on "how to present in a conference", "how to write an email", "how to ask for help (cold email)". Hope it helps!
1) Academic Job Search :
2)Surviving Your Academic Job Hunt: Advice for Humanities PhDs
3) A PhD is not enough
4) The professor is in
5) The portable dissertation adviser