Best books on currency trading
Almost all the books from which I learned most that was helpful and relevant to currency trading weren't specifically "currency trading books", but rather "general trading books" all or most of whose content was directly applicable to forex trading, just as to the trading of other financial instruments.
I've listed them all toward the end of this post, if that helps.

Can you recommend any good trading webinars? For example from some broker or analytics service?There are a lot of good reads out there, but if you prefer a more convenient way, i mean in digital form, try to consider reading an eBook. In case you want to try this Forex eBook that i read before, it has exercise questions after every topic for a more comprehensive read.