Any suggestions for others just starting to learn about this deity?
There are two good ways of getting to know Antinous better–or getting to know any god better, for that matter. One is to do some research. Antinous is a historical figure as well as a divine person; books and articles on Hadrian and the Antonine emperors are going to include some information about him. The Aedicula Antinoi has an excellent bibliography on the site, as well as a list of PSVL’s own books and articles on Antinous, from the point of view of someone who is both a scholar and a devotee.
The other way of getting to know him is simply to light a candle, pour out a cup of cool clean water or some wine, perhaps burn some incense, and address the god directly. It helps to have an image of Antinous; if you have money to spend, you can find reproduction statuary, but it’s not necessary to do that right away. There are an abundance of images online which can be printed out and framed or used as wallpaper on your devices. (The god graces my smartphone and my laptop, and sometimes my tablet, too.) Place the image where you can gaze on it, place your offerings before him, and recite a prayer, even if all you say is, “Ave, Antinoe!” Approach him, and see what happens.