I think that everyone has to find what works for them, particularly in a self-study context. For myself, I would never have started down this road without someone showing me a copy of Hans Orberg's Lingua Latina Per Se Illustrata. The first chapter had me hooked. While I quickly ran out of my depth and had to go scrambling for a grammar book, that first experience was what set the hook and made me think I could do it.
Our great fortune in Latin is that we are the beneficiaries are hundreds of years of scholarship that the Internet has made available at little or no cost:
- So, if you want forums, you have resources like Textkit and Schola.
- If you want to listen you can find lots of material on Latinum. Greek Latin Audio has recordings of the Latin New Testament if you have an ecclesiastical interest.
- If you prefer to watch, Latinum also has a growing selection of videos on youtube.
- If you prefer to read, texts are available from a number of sources (textkit, google books, and many others).
I would suggest you try out several resources and see what draws you in. I get a kick out of the Latin edition of Euclid that I found on Google Books and I've spent a lot of time with Comenius' Orbis Pictus because of the fascinating view of Europe in the 17th century. Some students are putting up Latin versions of music videos, so the range of material and expression is very wide and certainly not limited to the ancients (or the medieval, or the renaissance, or the enlightenment, et cetera).