Hello Leo,
I am MTF so going the other way but if I may, I would like to share some thoughts.
Our transitions are only a process so before that comes for you, may I suggest to think about what type of man are you?
What I mean by this is, that there are many different types, so for example, some men are jocks, others are scholarly, some are gentlemen, most are not..lol. so therefore, starting from what type of man yo are and also what type of lifestyle you wish to live are good starting points becasue in these things, you will become aware of what interests you would like to pursue, learn and later refine.
An example of this, perhaps, would be mens clothing.
Then from there, your lifestyle and which clothes to wear.
There are 2 main categories
Classic Menswear and
Streetwear.
Under these, are every conceivable clothing you would ever want.
I will give you some links. You don't have to join if you don't wish to, but I encourage you to just browse the links, and perhaps this can be a source of inspiration.
Streetwear & Denimhttp://www.styleforum.net/f/13/streetwear-and-denimWhat Are You Wearing Today WAYWThttp://www.styleforum.net/t/164384/the-waywt-discussion-thread/90900#post_6250758over 6.000 pages to sift through.
Classic Menswearhttp://www.styleforum.net/f/5/classic-menswearThere is a specific thread called
'What Are You Wearing Right Now'http://www.styleforum.net/t/234255/hof-what-are-you-wearing-right-now-part-iii/48810Thousands of pages of men posting their clothes...and a lot of boyish banter.
This section is more for traditional menswear.
Hopefully, there are photos and discussion that you can enjoy there and pick up on how some men talk and behave.
Because you alreasy identify as male, there is nothing to worry about there so all that is needed is practical experience living as such and that simply somes with time.
There are a few films I would recommend, on what I personally feel are examples of a 'mans man'
Tombstone
Braveheart
The Patriot
Die Hard (first one is best but the first 3 are all good)
Gladiator
These are only pesonal favourites but I love the male personas of these heros.
Oh...something that also comes to mind is the mind itself.
Wherever possible, try to connect with or have social moments with older men.
The Mens Clothing discussion Forum Styleforum would be good practice for you to hone some skills.
Beauty of the internet is, no one knows who anyone is so use this to your advantage.
Wishing you smooth sailing and peace.
I hope this was of some help.