furkids step away from the computer/monitor breath, relax, breath. I was lucky I had a friend to introduce and get me set up with this stuff, but I admit it is allot to take in. Keep it simple to start with get something like a 510 manual or an ego, some carts(I recommend cartridges eventually) and some juice. Start playing with flavors and figure what you like. It sounds weird initially to vape grape, or waffle or any of the crazy flavors out there, but they are actually really good. From there, while you have start you can start to figure out what is working and not working for you and decide what you need to get next. Initially it can be expensive as you figure this out, but once you hit that sweet spot, then its just fun!
Since the beginning of last month I went from an ego with carts for a few days to cartomizers to dripping on ego T batteries for a few weeks to a Silver Bullet. In a month and a half, I do not want to figure what I have spent on all this(initial kit given by a friend), but now I have hit that sweet spot, I know I like Iken lr atomizers, I love the consistency of the Silver Bullet and when I decide to use cartomizers, I know what brand of those I like to use. My budget is now free to play with juice and occasionally resupply my atomizers. It is allot of fun to try allot of these different juice manufacturers. I usually vape vaperite's tobaccos as they have a very realistic tobacco taste(not cigarette taste, but tobacco) and numerous other vendors sweets and other things, like Snickerdoodle and pumpkin pie (two of my current faves).
So take it slow, get something to start with and then start to modify and extend based on what works and what does not.