Since I'm obviously new to this forum, I'll start by introducing myself

My name is Jay, I'm 19 and from New Hampshire. I'd like to consider myself a pretty competitive Magic player. I regularly attend PTQs and FNMs and just have a genuine love of the game. I starting playing during Onslaught/Mirrodin and have played consistently since. I look forward to getting to know this community more

I've never really gotten into the eternal formats. I've always just been your typical drafter/standard player, with a dabble of Extended mixed in. This being said, I'm obviously really interested in getting into Vintage. There is a place I found that does weekly Vintage tournies, with I think 15 proxies. And what's really cool is that they have an artist there who you can pay to draw art on blank cards to use as your proxies. Anyway, I know a little of the basics of the format, such as a few of the higher tier decks, some popular card interactions, etc, but that's really the extent of it. The more I read about it the more interested I get. Just seems like a really fun, skill-intensive, and interesting format. There are a couple problems, however. My collection of cards consists almost entirely of Onslaught onward. Money isn't really a HUGE issue for me (obviously I'm not looking to buy power or anything), but I'm not afraid of spending a little money to have some fun.
My main questions were; What are some examples of decks that are relatively easy for inexperienced Vintage players to handle? Do they even exist? When looking to purchase some Vintage cards, what are some of the staples that all Vintages players should have? How expensive or inexpensive can it actually be to make a 15 proxy Vintage deck that is competitive?
So yeah, any help for this Vintage newb to get off his feet would be spectacular. Thanks again for your time.
~Jay