My suggestion for you, as a newer player, would be to try to participate in and learn how to do drafts before you go jumping too hard on the constructed FNM bandwagon. Most LGS will have regular drafts so it shouldn't be too hard to find ones to play in.
Why draft? Well, there are a bunch of reasons why I think it is useful for newer players to start in the draft pods before going into the grinder parade of constructed FNMs:
1) Draft is still limited play. By this I mean that drafts fall into the limited format, where players will only be allowed to use cards from the cards that they pull. This can lead to some pretty bonkers, overpowered decks that steamroll the competition if someone pulls really well, but the more likely outcome is that everyone has a similar pool and will have comparable decks. This is key for a newer player who doesn't have $700 to drop into your mana base.
2) Draft FORCES you to learn about cards, card interactions, strategies, and deckbuilding. So, if you're unfamiliar, in a draft what happens is each player in the pod opens a pack, picks one card for their pool, and then passes the pack to the player on their left (or right if it's the second pack). After three packs worth of doing this, everyone builds the best 40 card deck they can using the cards they pulled in this fashion (supplemented with basic lands provided by the LGS of course). This can devolve into people just taking the money rares, but often that strategy leads to REALLY bad decks and poor performance. More importantly this can teach you how to really think about the cards, what they do, how they fit into your play style, what their abilities are good for, what sorts of cards they interact with, etc. - essentially, by choosing cards one-at-a-time, you are doing everything that you should do during constructed deckbuilding, but on a card-by-card basis. Sure, if there is a card that doesn't fit your deck that you've been dying to get your hands on, go for it, and, similarly, if there is a card that pays for the entire draft, again, take it. But, on average, you should focus on building the best deck you can.
3) Draft builds your collection, all while having fun. So if you recall just a minute ago, I said draft is limited play and you don't need $700 worth of cards for your mana base... but here's the clincher - you keep the draft cards (and any winnings), allowing you to accumulate more cards all while learning about the things I detailed in part 2. Before you know it, you have the cards necessary to build something that will tread at least a little bit of water in a constructed FNM.
4) Drafts are (normally) much less stressful, less competitive, and just more enjoyable. Note that, as with any aspect of Magic, there are those Spikes out there (and the game wouldn't be the same without them) who are total cutthroat players that would push their mother out into traffic if it means winning one more game. So again, there will be variation across stores and even draft pods in terms of how competitive or stressful the gameplay will be, but, on average, I would argue that players who are drafting will be more laid back and probably more willing to help you learn than in a constructed FNM where just about everyone has net-decked anyway.
5) Keep in mind that, as a newer player, even in draft it is likely that you will lose quite a bit to start out. The key here is to use those opportunities to learn more about what you've done correctly and what you've done incorrectly. As I said previously, part of the fun (and frustration) of limited play is that the power-level of a deck can come down to what you pull out of the packs. But this is great because it means you can see situations where your play was perfect and yet you still lose, or where your cards were clearly superior and it was your line of play that cost you the game. The biggest challenge will be to differentiate from the two - and don't be afraid to ASK your opponent (win or lose) if there was something else you could have done, or if there were cards they were playing around, or if you did something right. You're learning, so soak it all in.
So, I've typed this lengthy diatribe about how draft is where you should be. I hope that at least some of the information contained is helpful or can at least point you in a path toward having fun playing this game that we are all addicted to. Another thing to keep in mind, the new set Khans of Tarkir has its pre-release this coming weekend (19-21) which could be a LOT of fun for a newer player and then I'm sure tons of people will want to draft the new set. So get out there, draft some cards, try to learn from your mistakes, build your collection, and, most importantly, have fun with it!
Good luck. If I can be of any other assistance, just let me know.